Antitrust Radar

Economy-wide observatory

U.S. industry concentration atlas

How concentrated each U.S. industry is, from broad sectors down to detailed lines of business, with each industry's sales, value of shipments, or revenue, and employment from the Census Bureau. Census categories are statistical groupings and are not necessarily antitrust markets.

899Detailed industriessix-digit NAICS679Published HHI220 withheld68Top decileHHI >= 1,081$50.3TRevenue represented2022 Census

Sector signal plane

Where sector medians sit in the Census universe

17 sectorscircle = detailed rowsOpen priority list
Sector median HHI and CR4 signal planeSeventeen Census sectors plotted by median detailed-industry HHI and median CR4, with screen, watch, and priority review HHI regions. Circle size represents the number of detailed industries. Each point links to the filtered industry atlas.Median detailed-industry HHIMedian CR4 (%)Mining, quarrying, and oil and gas extraction: median HHI 559.2; median CR4 43.7% across 21 detailed industries.21Utilities: median HHI 615.9; median CR4 41.6% across 14 detailed industries.22Construction: median HHI 19.4; median CR4 6.4% across 31 detailed industries.Manufacturing: median HHI 439.3; median CR4 38.5% across 346 detailed industries.Wholesale trade: median HHI 360.8; median CR4 29.9% across 69 detailed industries.Retail trade: median HHI 133.9; median CR4 32.8% across 57 detailed industries.Transportation and warehousing: median HHI 277.4; median CR4 40% across 54 detailed industries.Information: median HHI 638.2; median CR4 45.6% across 29 detailed industries.51Finance and insurance: median HHI 405.8; median CR4 31% across 29 detailed industries.Real estate and rental and leasing: median HHI 116.9; median CR4 29.4% across 24 detailed industries.Professional, scientific, and technical services: median HHI 94.9; median CR4 17.8% across 48 detailed industries.Administrative and support and waste management and remediation services: median HHI 182; median CR4 23.5% across 44 detailed industries.Educational services: median HHI 75.6; median CR4 15% across 14 detailed industries.Health care and social assistance: median HHI 35.8; median CR4 8.4% across 39 detailed industries.Arts, entertainment, and recreation: median HHI 192.2; median CR4 21.2% across 25 detailed industries.Accommodation and food services: median HHI 15; median CR4 8% across 15 detailed industries.Other services (except public administration): median HHI 54.3; median CR4 12.8% across 40 detailed industries.
Below 100100-299300-499500+
Priority review / NAICS 51Information
Median HHI638.2Median CR445.6%Sector rank1 / 17Top-decile industries4 / 29

13.8% of detailed industries in this sector fall in the national HHI top decile.

Open sector evidence

NAICS hierarchy navigator

Move through the official industry classification

Select any branch to carry its detailed-industry scope into the concentration plane, economy map, and evidence directory below.

Current branchU.S. economyAll 17 NAICS sectors
Detailed descendants899Six-digit records in scope
Published HHI75.5%679 published / 220 withheld
Revenue$50.3TSum across detailed rows

NAICS sectors

U.S. economy / bars normalized to the largest visible revenue value

Selected classification

All sectors

U.S. industry economy

The complete employer-firm concentration universe across 17 Census sectors.

Median HHI
284
Revenue
$50.3T
Employment
132.1M
Employer firms
6.2M
AtlasDataTrace 2017-2022

NAICS hierarchy is an economic classification, not a legal product or geographic market definition.

Economy concentration plane

See scale and concentration together

Revenue uses a logarithmic axis, circle area follows employer-firm count, and color identifies the two-digit NAICS sector.

Current scopeAll detailed industries899 detailed rows
Published HHI67975.5% of scope
Median HHI284Median CR4 30.6%
Revenue represented$50.3T220 HHI disclosure-withheld

Detailed-industry cross-section

679 published industries plotted by revenue, HHI, employer-firm count, and NAICS sector.

220 withheld
NAICS 722513: Limited-service restaurants; HHI 13.5; $358.9B revenue; 166,733 employer firmsNAICS 541110: Offices of lawyers; HHI 11.4; $356B revenue; 156,777 employer firmsNAICS 531210: Offices of real estate agents and brokers; HHI 54.3; $179.4B revenue; 150,558 employer firmsNAICS 621111: Offices of physicians (except mental health specialists); HHI 18.5; $630.2B revenue; 138,120 employer firmsNAICS 236118: Residential remodelers; HHI 1.9; $129.1B revenue; 127,652 employer firmsNAICS 524210: Insurance agencies and brokerages; HHI 59.5; $194.3B revenue; 122,475 employer firmsNAICS 621210: Offices of dentists; HHI 5.5; $160.3B revenue; 121,011 employer firmsNAICS 561730: Landscaping services; HHI 18.1; $115.4B revenue; 114,570 employer firmsNAICS 238220: Plumbing, heating, and air-conditioning contractors; HHI 9.3; $297.6B revenue; 112,088 employer firmsNAICS 541611: Administrative management and general management consulting services; HHI 118.4; $219.1B revenue; 101,761 employer firmsNAICS 811111: General automotive repair; HHI 2.6; $71B revenue; 79,149 employer firmsNAICS 238210: Electrical contractors and other wiring installation contractors; HHI 11.6; $249.2B revenue; 78,975 employer firmsNAICS 812112: Beauty salons; HHI 2.4; $25.7B revenue; 73,148 employer firmsNAICS 624410: Child care services; HHI 22.5; $58.4B revenue; 63,487 employer firmsNAICS 541511: Custom computer programming services; HHI 54.7; $278.5B revenue; 63,144 employer firmsNAICS 457110: Gasoline stations with convenience stores; HHI 196.1; $533.8B revenue; 56,502 employer firmsNAICS 531110: Lessors of residential buildings and dwellings; HHI 34.9; $162.3B revenue; 55,397 employer firmsNAICS 236115: New single-family housing construction (except for-sale builders); HHI 14.5; $117.8B revenue; 54,266 employer firmsNAICS 484121: General freight trucking, long-distance, truckload; HHI 98; $172.7B revenue; 53,705 employer firmsNAICS 541613: Marketing consulting services; HHI 24.1; $77.5B revenue; 50,507 employer firmsNAICS 541211: Offices of certified public accountants; HHI 601.6; $144.7B revenue; 49,807 employer firmsNAICS 523940: Portfolio management and investment advice; HHI 97.8; $372.9B revenue; 49,678 employer firmsNAICS 541219: Other accounting services; HHI 16; $30.3B revenue; 47,767 employer firmsNAICS 541330: Engineering services; HHI 34.6; $304.3B revenue; 47,367 employer firmsNAICS 541512: Computer systems design services; HHI 189.6; $243.3B revenue; 46,074 employer firmsNAICS 484110: General freight trucking, local; HHI 3.1; $54.7B revenue; 43,243 employer firmsNAICS 458110: Clothing and clothing accessories retailers; HHI 251.4; $284.8B revenue; 41,966 employer firmsNAICS 445110: Supermarkets and other grocery retailers (except convenience retailers); HHI 506.7; $808.8B revenue; 41,556 employer firmsNAICS 722410: Drinking places (alcoholic beverages); HHI 3; $33.7B revenue; 39,627 employer firmsNAICS 238910: Site preparation contractors; HHI 3.8; $158.7B revenue; 39,460 employer firmsNAICS 236220: Commercial and institutional building construction; HHI 23.1; $585.6B revenue; 39,454 employer firmsNAICS 531311: Residential property managers; HHI 24.1; $69.6B revenue; 39,404 employer firmsNAICS 621330: Offices of mental health practitioners (except physicians); HHI 6.6; $23.3B revenue; 39,395 employer firmsNAICS 711510: Independent artists, writers, and performers; HHI 3.3; $28.6B revenue; 38,711 employer firmsNAICS 238320: Painting and wall covering contractors; HHI 2.9; $33B revenue; 38,036 employer firmsNAICS 561110: Office administrative services; HHI 7.4; $90.8B revenue; 34,536 employer firmsNAICS 531120: Lessors of nonresidential buildings (except miniwarehouses); HHI 64; $155.2B revenue; 33,656 employer firmsNAICS 812113: Nail salons; HHI 0.1; $11.4B revenue; 33,066 employer firmsNAICS 445320: Beer, wine, and liquor retailers; HHI 80.6; $73.8B revenue; 32,201 employer firmsNAICS 484220: Specialized freight (except used goods) trucking, local; HHI 2.4; $57.5B revenue; 31,927 employer firmsNAICS 238350: Finish carpentry contractors; HHI 9.1; $42.7B revenue; 31,865 employer firmsNAICS 459999: All other miscellaneous retailers; HHI 87.7; $62.3B revenue; 30,996 employer firmsNAICS 624120: Services for the elderly and persons with disabilities; HHI 7.3; $77.3B revenue; 30,629 employer firmsNAICS 445131: Convenience retailers; HHI 37.4; $38.8B revenue; 29,905 employer firmsNAICS 621399: Offices of all other miscellaneous health practitioners; HHI 85.4; $18.3B revenue; 29,775 employer firmsNAICS 621610: Home health care services; HHI 42.2; $114.2B revenue; 27,774 employer firmsNAICS 812199: Other personal care services; HHI 13.4; $13.7B revenue; 26,697 employer firmsNAICS 812910: Pet care (except veterinary) services; HHI 4.2; $10.1B revenue; 24,098 employer firmsNAICS 444180: Other building material dealers; HHI 58.9; $166.6B revenue; 23,208 employer firmsNAICS 238110: Poured concrete foundation and structure contractors; HHI 12.8; $78.7B revenue; 22,865 employer firmsNAICS 813410: Civic and social organizations; HHI 7; $18.5B revenue; 22,430 employer firmsNAICS 541310: Architectural services; HHI 18; $48.6B revenue; 21,258 employer firmsNAICS 531390: Other activities related to real estate; HHI 60.7; $25.9B revenue; 20,909 employer firmsNAICS 611620: Sports and recreation instruction; HHI 13; $11.6B revenue; 19,703 employer firmsNAICS 456110: Pharmacies and drug retailers; HHI 1,710.8; $543.9B revenue; 19,676 employer firmsNAICS 459991: Tobacco, electronic cigarette, and other smoking supplies retailers; HHI 14.6; $31.3B revenue; 19,453 employer firmsNAICS 423830: Industrial machinery and equipment merchant wholesalers; HHI 34.7; $282.3B revenue; 18,795 employer firmsNAICS 621320: Offices of optometrists; HHI 21.7; $20.1B revenue; 18,582 employer firmsNAICS 813990: Other similar organizations (except business, professional, labor, and political organizations); HHI 69.3; $34.9B revenue; 18,262 employer firmsNAICS 236117: New housing for-sale builders; HHI 248.9; $276.6B revenue; 18,094 employer firmsNAICS 238140: Masonry contractors; HHI 9; $28.6B revenue; 17,971 employer firmsNAICS 459110: Sporting goods retailers; HHI 395.8; $81.7B revenue; 17,834 employer firmsNAICS 512110: Motion picture and video production; HHI 773.7; $87.5B revenue; 17,547 employer firmsNAICS 541990: All other professional, scientific, and technical services; HHI 77.5; $28B revenue; 17,530 employer firmsNAICS 238330: Flooring contractors; HHI 12.4; $24.2B revenue; 17,269 employer firmsNAICS 441110: New car dealers; HHI 25.4; $1.2T revenue; 17,242 employer firmsNAICS 441330: Automotive parts and accessories retailers; HHI 645.3; $95.3B revenue; 17,199 employer firmsNAICS 488510: Freight transportation arrangement; HHI 43.4; $134.9B revenue; 17,130 employer firmsNAICS 332710: Machine shops; HHI 3.5; $44.7B revenue; 16,876 employer firmsNAICS 459420: Gift, novelty, and souvenir retailers; HHI 151.5; $24.5B revenue; 16,663 employer firmsNAICS 541410: Interior design services; HHI 4.7; $19.7B revenue; 16,649 employer firmsNAICS 561320: Temporary help services; HHI 137.7; $326B revenue; 16,340 employer firmsNAICS 541430: Graphic design services; HHI 4.9; $9.8B revenue; 16,233 employer firmsNAICS 611610: Fine arts schools; HHI 2.2; $6.9B revenue; 15,977 employer firmsNAICS 811192: Car washes; HHI 57; $14.8B revenue; 15,613 employer firmsNAICS 459510: Used merchandise retailers; HHI 39.4; $24.8B revenue; 15,344 employer firmsNAICS 623312: Assisted living facilities for the elderly; HHI 86.7; $38.9B revenue; 14,674 employer firmsNAICS 813910: Business associations; HHI 20; $30.2B revenue; 14,599 employer firmsNAICS 812320: Drycleaning and laundry services (except coin-operated); HHI 4.4; $7.1B revenue; 14,200 employer firmsNAICS 449110: Furniture retailers; HHI 133.9; $91.5B revenue; 14,197 employer firmsNAICS 323111: Commercial printing (except screen and books); HHI 58.7; $70.7B revenue; 14,115 employer firmsNAICS 561710: Exterminating and pest control services; HHI 327.2; $19.9B revenue; 13,928 employer firmsNAICS 238130: Framing contractors; HHI 20; $29.1B revenue; 13,016 employer firmsNAICS 531320: Offices of real estate appraisers; HHI 116.9; $7.9B revenue; 12,955 employer firmsNAICS 813211: Grantmaking foundations; HHI 202; $130.8B revenue; 12,586 employer firmsNAICS 722320: Caterers; HHI 7.3; $13B revenue; 12,289 employer firmsNAICS 621112: Offices of physicians, mental health specialists; HHI 16.2; $10.2B revenue; 11,973 employer firmsNAICS 541519: Other computer related services; HHI 186.6; $55B revenue; 11,570 employer firmsNAICS 441340: Tire dealers; HHI 480.4; $43.3B revenue; 11,132 employer firmsNAICS 624110: Child and youth services; HHI 11.7; $24.1B revenue; 11,047 employer firmsNAICS 456120: Cosmetics, beauty supplies, and perfume retailers; HHI 774.8; $50.3B revenue; 10,885 employer firmsNAICS 424490: Other grocery and related products merchant wholesalers; HHI 164.5; $418.8B revenue; 10,705 employer firmsNAICS 484230: Specialized freight (except used goods) trucking, long-distance; HHI 74; $52.6B revenue; 10,701 employer firmsNAICS 623110: Nursing care facilities (skilled nursing facilities); HHI 21; $135.4B revenue; 10,663 employer firmsNAICS 811490: Other personal and household goods repair and maintenance; HHI 12.1; $5.8B revenue; 10,588 employer firmsNAICS 561990: All other support services; HHI 75.2; $29.7B revenue; 10,554 employer firmsNAICS 541715: Research and development in the physical, engineering, and life sciences (except nanotechnology and biotechnology); HHI 117.2; $195.7B revenue; 10,504 employer firmsNAICS 611710: Educational support services; HHI 105.3; $21.8B revenue; 10,504 employer firmsNAICS 238340: Tile and terrazzo contractors; HHI 18.6; $12.2B revenue; 10,469 employer firmsNAICS 811210: Electronic and precision equipment repair and maintenance; HHI 66.2; $16.7B revenue; 10,441 employer firmsNAICS 237110: Water and sewer line and related structures construction; HHI 11.1; $56.9B revenue; 10,380 employer firmsNAICS 488410: Motor vehicle towing; HHI 7.1; $12B revenue; 10,066 employer firmsNAICS 722330: Mobile food services; HHI 1.8; $3B revenue; 10,062 employer firmsNAICS 449129: All other home furnishings retailers; HHI 802.6; $64.9B revenue; 9,761 employer firmsNAICS 621420: Outpatient mental health and substance abuse centers; HHI 9.2; $30.6B revenue; 9,647 employer firmsNAICS 484210: Used household and office goods moving; HHI 111.7; $20.1B revenue; 9,519 employer firmsNAICS 522310: Mortgage and nonmortgage loan brokers; HHI 217.7; $17.1B revenue; 9,456 employer firmsNAICS 424990: Other miscellaneous nondurable goods merchant wholesalers; HHI 54.4; $55.7B revenue; 9,341 employer firmsNAICS 424350: Clothing and clothing accessories merchant wholesalers; HHI 56.3; $124.9B revenue; 9,208 employer firmsNAICS 713910: Golf courses and country clubs; HHI 29.7; $31.3B revenue; 9,126 employer firmsNAICS 531130: Lessors of miniwarehouses and self-storage units; HHI 606; $20.6B revenue; 8,946 employer firmsNAICS 621498: All other outpatient care centers; HHI 27.7; $69.6B revenue; 8,942 employer firmsNAICS 237310: Highway, street, and bridge construction; HHI 19.6; $160.3B revenue; 8,901 employer firmsNAICS 523910: Miscellaneous intermediation; HHI 84.4; $45.8B revenue; 8,885 employer firmsNAICS 541614: Process, physical distribution, and logistics consulting services; HHI 30; $26B revenue; 8,668 employer firmsNAICS 611691: Exam preparation and tutoring; HHI 186.6; $7.3B revenue; 8,565 employer firmsNAICS 611430: Professional and management development training; HHI 35; $14.6B revenue; 8,511 employer firmsNAICS 541620: Environmental consulting services; HHI 62.6; $21.4B revenue; 8,498 employer firmsNAICS 541820: Public relations agencies; HHI 73.7; $15.8B revenue; 8,125 employer firmsNAICS 456191: Food (health) supplement retailers; HHI 167.4; $21.6B revenue; 8,087 employer firmsNAICS 523150: Investment banking and securities intermediation; HHI 354.8; $306.7B revenue; 7,815 employer firmsNAICS 811114: Specialized automotive repair; HHI 15.6; $5.9B revenue; 7,708 employer firmsNAICS 541612: Human resources consulting services; HHI 281.3; $24.6B revenue; 7,694 employer firmsNAICS 484122: General freight trucking, long-distance, less than truckload; HHI 572.3; $65.7B revenue; 7,675 employer firmsNAICS 213112: Support activities for oil and gas operations; HHI 241.4; $72.3B revenue; 7,495 employer firmsNAICS 541350: Building inspection services; HHI 33.1; $4.5B revenue; 7,459 employer firmsNAICS 423450: Medical, dental, and hospital equipment and supplies merchant wholesalers; HHI 273.9; $311.5B revenue; 7,394 employer firmsNAICS 621999: All other miscellaneous ambulatory health care services; HHI 167.8; $25.4B revenue; 7,270 employer firmsNAICS 611699: All other miscellaneous schools and instruction; HHI 37.5; $4.9B revenue; 7,239 employer firmsNAICS 541370: Surveying and mapping (except geophysical) services; HHI 26.5; $11B revenue; 7,225 employer firmsNAICS 562111: Solid waste collection; HHI 679.1; $65.8B revenue; 7,218 employer firmsNAICS 813319: Other social advocacy organizations; HHI 61.2; $16.5B revenue; 7,210 employer firmsNAICS 456199: All other health and personal care retailers; HHI 96.6; $23B revenue; 7,176 employer firmsNAICS 423690: Other electronic parts and equipment merchant wholesalers; HHI 688.3; $535.8B revenue; 7,173 employer firmsNAICS 311811: Retail bakeries; HHI 5.3; $6.1B revenue; 7,156 employer firmsNAICS 541890: Other services related to advertising; HHI 94.9; $22.1B revenue; 7,067 employer firmsNAICS 238390: Other building finishing contractors; HHI 23.2; $14.4B revenue; 7,065 employer firmsNAICS 423610: Electrical apparatus and equipment, wiring supplies, and related equipment merchant wholesalers; HHI 162.5; $219.4B revenue; 7,035 employer firmsNAICS 531190: Lessors of other real estate property; HHI 258.9; $11.7B revenue; 7,019 employer firmsNAICS 423120: Motor vehicle supplies and new parts merchant wholesalers; HHI 137.1; $217.9B revenue; 6,957 employer firmsNAICS 423940: Jewelry, watch, precious stone, and precious metal merchant wholesalers; HHI 254.9; $76.2B revenue; 6,688 employer firmsNAICS 813312: Environment, conservation and wildlife organizations; HHI 97.4; $17.4B revenue; 6,638 employer firmsNAICS 424210: Drugs and druggists' sundries merchant wholesalers; HHI 805.7; $1.3T revenue; 6,632 employer firmsNAICS 238150: Glass and glazing contractors; HHI 19.2; $18.9B revenue; 6,618 employer firmsNAICS 238290: Other building equipment contractors; HHI 221.8; $42.4B revenue; 6,611 employer firmsNAICS 441227: Motorcycle, ATV, and all other motor vehicle dealers; HHI 10.6; $43.5B revenue; 6,569 employer firmsNAICS 621391: Offices of podiatrists; HHI 11.1; $5.4B revenue; 6,546 employer firmsNAICS 812111: Barber shops; HHI 39.2; $1.7B revenue; 6,370 employer firmsNAICS 561920: Convention and trade show organizers; HHI 78.8; $17.4B revenue; 6,345 employer firmsNAICS 813920: Professional organizations; HHI 51.6; $22.7B revenue; 6,306 employer firmsNAICS 337110: Wood kitchen cabinet and countertop manufacturing; HHI 265.6; $21B revenue; 6,287 employer firmsNAICS 561311: Employment placement agencies; HHI 55.6; $21.4B revenue; 6,270 employer firmsNAICS 561312: Executive search services; HHI 163.8; $12.6B revenue; 6,198 employer firmsNAICS 621493: Freestanding ambulatory surgical and emergency centers; HHI 116.4; $44.1B revenue; 6,092 employer firmsNAICS 423510: Metal service centers and other metal merchant wholesalers; HHI 122; $305.3B revenue; 6,006 employer firmsNAICS 423930: Recyclable material merchant wholesalers; HHI 183.5; $107.7B revenue; 5,985 employer firmsNAICS 238190: Other foundation, structure, and building exterior contractors; HHI 27.4; $10.6B revenue; 5,722 employer firmsNAICS 323113: Commercial screen printing; HHI 102.8; $12.5B revenue; 5,708 employer firmsNAICS 541380: Testing laboratories and services; HHI 103; $27.9B revenue; 5,690 employer firmsNAICS 339950: Sign manufacturing; HHI 45.2; $14.5B revenue; 5,661 employer firmsNAICS 811191: Automotive oil change and lubrication shops; HHI 212; $9.6B revenue; 5,527 employer firmsNAICS 237130: Power and communication line and related structures construction; HHI 156.2; $102.9B revenue; 5,526 employer firmsNAICS 423840: Industrial supplies merchant wholesalers; HHI 139.2; $94.6B revenue; 5,526 employer firmsNAICS 423220: Home furnishing merchant wholesalers; HHI 148.2; $86.4B revenue; 5,472 employer firmsNAICS 424690: Other chemical and allied products merchant wholesalers; HHI 165.3; $259.9B revenue; 5,465 employer firmsNAICS 711130: Musical groups and artists; HHI 30.4; $6.8B revenue; 5,460 employer firmsNAICS 532490: Other commercial and industrial machinery and equipment rental and leasing; HHI 186.7; $43.8B revenue; 5,347 employer firmsNAICS 541513: Computer facilities management services; HHI 80.3; $23.8B revenue; 5,338 employer firmsNAICS 458210: Shoe retailers; HHI 565.5; $57B revenue; 5,329 employer firmsNAICS 541922: Commercial photography; HHI 19.4; $2.6B revenue; 5,313 employer firmsNAICS 811412: Appliance repair and maintenance; HHI 18.3; $2.9B revenue; 5,235 employer firmsNAICS 516210: Media streaming distribution services, social networks, and other media networks and content providers; HHI 638.2; $300.8B revenue; 5,217 employer firmsNAICS 445240: Meat retailers; HHI 75.4; $11.7B revenue; 5,189 employer firmsNAICS 562910: Remediation services; HHI 43.2; $22.7B revenue; 5,115 employer firmsNAICS 712110: Museums; HHI 63.2; $13.5B revenue; 5,065 employer firmsNAICS 459920: Art dealers; HHI 186.5; $11.1B revenue; 5,009 employer firmsNAICS 541320: Landscape architectural services; HHI 25; $6.6B revenue; 4,969 employer firmsNAICS 492210: Local messengers and local delivery; HHI 1,074.7; $23.6B revenue; 4,956 employer firmsNAICS 424910: Farm supplies merchant wholesalers; HHI 221; $207B revenue; 4,928 employer firmsNAICS 541214: Payroll services; HHI 311; $26.6B revenue; 4,902 employer firmsNAICS 541199: All other legal services; HHI 152.5; $6B revenue; 4,860 employer firmsNAICS 339999: All other miscellaneous manufacturing; HHI 212.6; $12.9B revenue; 4,799 employer firmsNAICS 711410: Agents and managers for artists, athletes, entertainers, and other public figures; HHI 289.9; $10.8B revenue; 4,767 employer firmsNAICS 423110: Automobile and other motor vehicle merchant wholesalers; HHI 755.8; $768.3B revenue; 4,730 employer firmsNAICS 621512: Diagnostic imaging centers; HHI 76.1; $25B revenue; 4,717 employer firmsNAICS 326199: All other plastics product manufacturing; HHI 38.8; $122.7B revenue; 4,697 employer firmsNAICS 339116: Dental laboratories; HHI 173.1; $6.3B revenue; 4,669 employer firmsNAICS 541714: Research and development in biotechnology (except nanobiotechnology); HHI 90.9; $91B revenue; 4,593 employer firmsNAICS 623220: Residential mental health and substance abuse facilities; HHI 36.1; $21.4B revenue; 4,504 employer firmsNAICS 721211: RV (recreational vehicle) parks and campgrounds; HHI 59.6; $4.3B revenue; 4,474 employer firmsNAICS 811198: All other automotive repair and maintenance; HHI 86; $3.2B revenue; 4,471 employer firmsNAICS 332322: Sheet metal work manufacturing; HHI 28.2; $39.5B revenue; 4,434 employer firmsNAICS 423710: Hardware merchant wholesalers; HHI 363.3; $94.2B revenue; 4,389 employer firmsNAICS 237990: Other heavy and civil engineering construction; HHI 139.4; $34B revenue; 4,377 employer firmsNAICS 423310: Lumber, plywood, millwork, and wood panel merchant wholesalers; HHI 209.6; $173B revenue; 4,298 employer firmsNAICS 813219: Other grantmaking and giving services; HHI 128.7; $21.8B revenue; 4,257 employer firmsNAICS 423910: Sporting and recreational goods and supplies merchant wholesalers; HHI 130.3; $67.9B revenue; 4,234 employer firmsNAICS 532289: All other consumer goods rental; HHI 43.5; $7.2B revenue; 4,232 employer firmsNAICS 517122: Agents for wireless telecommunications services; HHI 239.4; $20.4B revenue; 4,191 employer firmsNAICS 485320: Limousine service; HHI 55.2; $4.4B revenue; 4,125 employer firmsNAICS 423210: Furniture merchant wholesalers; HHI 94.8; $63.3B revenue; 4,120 employer firmsNAICS 722310: Food service contractors; HHI 1,318.8; $50.9B revenue; 4,080 employer firmsNAICS 423430: Computer and computer peripheral equipment and software merchant wholesalers; HHI 462.3; $331.3B revenue; 4,057 employer firmsNAICS 522110: Commercial banking; HHI 241.9; $591.1B revenue; 4,021 employer firmsNAICS 722514: Cafeterias, grill buffets, and buffets; HHI 25.8; $5.7B revenue; 4,017 employer firmsNAICS 457210: Fuel dealers; HHI 132.8; $43.3B revenue; 3,984 employer firmsNAICS 332721: Precision turned product manufacturing; HHI 13.4; $23.5B revenue; 3,951 employer firmsNAICS 238120: Structural steel and precast concrete contractors; HHI 25.4; $19.7B revenue; 3,898 employer firmsNAICS 561622: Locksmiths; HHI 17.5; $2.6B revenue; 3,895 employer firmsNAICS 624310: Vocational rehabilitation services; HHI 35.5; $14.3B revenue; 3,895 employer firmsNAICS 513110: Newspaper publishers; HHI 522.4; $23.2B revenue; 3,891 employer firmsNAICS 624210: Community food services; HHI 37.9; $17.6B revenue; 3,864 employer firmsNAICS 524291: Claims adjusting; HHI 161.3; $8.9B revenue; 3,862 employer firmsNAICS 522292: Real estate credit; HHI 261.7; $109.1B revenue; 3,835 employer firmsNAICS 562991: Septic tank and related services; HHI 92.1; $6.3B revenue; 3,821 employer firmsNAICS 236116: New multifamily housing construction (except for-sale builders); HHI 22.8; $77.9B revenue; 3,811 employer firmsNAICS 513120: Periodical publishers; HHI 201.3; $24.4B revenue; 3,805 employer firmsNAICS 561611: Investigation and personal background check services; HHI 199.8; $6.2B revenue; 3,799 employer firmsNAICS 623311: Continuing care retirement communities; HHI 35.5; $41.1B revenue; 3,694 employer firmsNAICS 541910: Marketing research and public opinion polling; HHI 189.2; $25.2B revenue; 3,649 employer firmsNAICS 611519: Other technical and trade schools; HHI 83.8; $7B revenue; 3,590 employer firmsNAICS 444230: Outdoor power equipment retailers; HHI 46.4; $13.6B revenue; 3,584 employer firmsNAICS 624229: Other community housing services; HHI 58.4; $11.8B revenue; 3,556 employer firmsNAICS 624221: Temporary shelters; HHI 21.9; $8.8B revenue; 3,555 employer firmsNAICS 522320: Financial transactions processing, reserve, and clearinghouse activities; HHI 659.6; $136.7B revenue; 3,551 employer firmsNAICS 488190: Other support activities for air transportation; HHI 115.2; $23.7B revenue; 3,513 employer firmsNAICS 711310: Promoters of performing arts, sports, and similar events with facilities; HHI 192.2; $21.6B revenue; 3,485 employer firmsNAICS 813311: Human rights organizations; HHI 284; $14.5B revenue; 3,461 employer firmsNAICS 713930: Marinas; HHI 20; $6.1B revenue; 3,438 employer firmsNAICS 517111: Wired telecommunications carriers; HHI 1,285.9; $322.7B revenue; 3,403 employer firmsNAICS 711110: Theater companies and dinner theaters; HHI 56.4; $8.7B revenue; 3,385 employer firmsNAICS 423850: Service establishment equipment and supplies merchant wholesalers; HHI 154.6; $28.6B revenue; 3,321 employer firmsNAICS 424130: Industrial and personal service paper merchant wholesalers; HHI 422.7; $122.1B revenue; 3,264 employer firmsNAICS 811420: Reupholstery and furniture repair; HHI 10.5; $1.3B revenue; 3,249 employer firmsNAICS 211120: Crude petroleum extraction; HHI 572.1; $354.1B revenue; 3,220 employer firmsNAICS 332999: All other miscellaneous fabricated metal product manufacturing; HHI 40.9; $18.7B revenue; 3,202 employer firmsNAICS 459410: Office supplies and stationery retailers; HHI 2,004.5; $32.7B revenue; 3,182 employer firmsNAICS 522390: Other activities related to credit intermediation; HHI 263; $26.1B revenue; 3,155 employer firmsNAICS 541340: Drafting services; HHI 84.4; $2.2B revenue; 3,153 employer firmsNAICS 512191: Teleproduction and other postproduction services; HHI 184.2; $6.4B revenue; 3,102 employer firmsNAICS 813212: Voluntary health organizations; HHI 447.9; $29.2B revenue; 3,096 employer firmsNAICS 561499: All other business support services; HHI 187.2; $9.7B revenue; 3,022 employer firmsNAICS 449122: Window treatment retailers; HHI 116; $4.8B revenue; 2,988 employer firmsNAICS 513199: All other publishers; HHI 497.7; $14.5B revenue; 2,984 employer firmsNAICS 236210: Industrial building construction; HHI 90.6; $36.2B revenue; 2,972 employer firmsNAICS 332312: Fabricated structural metal manufacturing; HHI 212.5; $55.5B revenue; 2,955 employer firmsNAICS 561210: Facilities support services; HHI 211.6; $41.2B revenue; 2,941 employer firmsNAICS 522291: Consumer lending; HHI 450.4; $47.6B revenue; 2,918 employer firmsNAICS 541490: Other specialized design services; HHI 160.9; $3.3B revenue; 2,910 employer firmsNAICS 812930: Parking lots and garages; HHI 345.2; $10.7B revenue; 2,829 employer firmsNAICS 332323: Ornamental and architectural metal work manufacturing; HHI 54.7; $10.8B revenue; 2,764 employer firmsNAICS 561330: Professional employer organizations; HHI 470.3; $197.9B revenue; 2,735 employer firmsNAICS 541930: Translation and interpretation services; HHI 395.4; $6.9B revenue; 2,728 employer firmsNAICS 423440: Other commercial equipment merchant wholesalers; HHI 151.3; $33B revenue; 2,693 employer firmsNAICS 532284: Recreational goods rental; HHI 90.6; $2.3B revenue; 2,633 employer firmsNAICS 711219: Other spectator sports; HHI 104.2; $4.3B revenue; 2,611 employer firmsNAICS 311812: Commercial bakeries; HHI 439.9; $38.2B revenue; 2,609 employer firmsNAICS 721214: Recreational and vacation camps (except campgrounds); HHI 15; $3.7B revenue; 2,577 employer firmsNAICS 321920: Wood container and pallet manufacturing; HHI 88.1; $18.3B revenue; 2,516 employer firmsNAICS 561520: Tour operators; HHI 193.1; $9B revenue; 2,513 employer firmsNAICS 485410: School and employee bus transportation; HHI 324.1; $12.2B revenue; 2,502 employer firmsNAICS 524292: Pharmacy benefit management and other third party administration of insurance and pension funds; HHI 1,633.5; $283.6B revenue; 2,480 employer firmsNAICS 424120: Stationery and office supplies merchant wholesalers; HHI 604.9; $36.2B revenue; 2,454 employer firmsNAICS 533110: Lessors of nonfinancial intangible assets (except copyrighted works); HHI 329; $62.1B revenue; 2,446 employer firmsNAICS 321113: Sawmills; HHI 191; $41.3B revenue; 2,439 employer firmsNAICS 424410: General line grocery merchant wholesalers; HHI 706.9; $265.5B revenue; 2,438 employer firmsNAICS 445291: Baked goods retailers; HHI 17.6; $1.8B revenue; 2,407 employer firmsNAICS 423730: Warm air heating and air-conditioning equipment and supplies merchant wholesalers; HHI 374; $96.6B revenue; 2,398 employer firmsNAICS 611692: Automobile driving schools; HHI 121.1; $1.3B revenue; 2,396 employer firmsNAICS 524298: All other insurance related activities; HHI 492.9; $8.7B revenue; 2,390 employer firmsNAICS 561422: Telemarketing bureaus and other contact centers; HHI 165.2; $25.6B revenue; 2,380 employer firmsNAICS 721191: Bed-and-breakfast inns; HHI 6.2; $1.2B revenue; 2,367 employer firmsNAICS 332812: Metal coating, engraving (except jewelry and silverware), and allied services to manufacturers; HHI 365.9; $18B revenue; 2,317 employer firmsNAICS 423490: Other professional equipment and supplies merchant wholesalers; HHI 517.3; $35.2B revenue; 2,282 employer firmsNAICS 622110: General medical and surgical hospitals; HHI 37.6; $1.3T revenue; 2,280 employer firmsNAICS 337212: Custom architectural woodwork and millwork manufacturing; HHI 24.4; $10B revenue; 2,227 employer firmsNAICS 488490: Other support activities for road transportation; HHI 172; $5.2B revenue; 2,221 employer firmsNAICS 321999: All other miscellaneous wood product manufacturing; HHI 164.3; $8.8B revenue; 2,205 employer firmsNAICS 327991: Cut stone and stone product manufacturing; HHI 52; $8B revenue; 2,203 employer firmsNAICS 513130: Book publishers; HHI 461.5; $29.1B revenue; 2,191 employer firmsNAICS 532111: Passenger car rental; HHI 3,029.2; $38.8B revenue; 2,190 employer firmsNAICS 522220: Sales financing; HHI 378.9; $133.6B revenue; 2,180 employer firmsNAICS 445250: Fish and seafood retailers; HHI 23.8; $3.8B revenue; 2,168 employer firmsNAICS 423320: Brick, stone, and related construction material merchant wholesalers; HHI 289.8; $37.5B revenue; 2,111 employer firmsNAICS 315210: Cut and sew apparel contractors; HHI 80.1; $2B revenue; 2,106 employer firmsNAICS 524126: Direct property and casualty insurance carriers; HHI 405.8; $727.5B revenue; 2,079 employer firmsNAICS 333514: Special die and tool, die set, jig, and fixture manufacturing; HHI 99.9; $9.8B revenue; 2,074 employer firmsNAICS 424510: Grain and field bean merchant wholesalers; HHI 360.8; $278.6B revenue; 2,068 employer firmsNAICS 519210: Libraries and archives; HHI 254.8; $2.7B revenue; 2,030 employer firmsNAICS 327320: Ready-mix concrete manufacturing; HHI 99.2; $43B revenue; 1,994 employer firmsNAICS 332313: Plate work manufacturing; HHI 35; $13.6B revenue; 1,980 employer firmsNAICS 424470: Meat and meat product merchant wholesalers; HHI 374; $113.2B revenue; 1,978 employer firmsNAICS 561910: Packaging and labeling services; HHI 147.6; $12.4B revenue; 1,964 employer firmsNAICS 523991: Trust, fiduciary, and custody activities; HHI 705.1; $19.1B revenue; 1,952 employer firmsNAICS 424450: Confectionery merchant wholesalers; HHI 1,182.9; $77.2B revenue; 1,937 employer firmsNAICS 423860: Transportation equipment and supplies (except motor vehicle) merchant wholesalers; HHI 307.7; $48.8B revenue; 1,920 employer firmsNAICS 532310: General rental centers; HHI 30.5; $3.2B revenue; 1,919 employer firmsNAICS 512131: Motion picture theaters (except drive-ins); HHI 1,017; $13B revenue; 1,916 employer firmsNAICS 424610: Plastics materials and basic forms and shapes merchant wholesalers; HHI 154.7; $56.3B revenue; 1,910 employer firmsNAICS 713290: Other gambling industries; HHI 333.1; $18.4B revenue; 1,910 employer firmsNAICS 423420: Office equipment merchant wholesalers; HHI 581.9; $33.3B revenue; 1,901 employer firmsNAICS 332813: Electroplating, plating, polishing, anodizing, and coloring; HHI 45.8; $7.9B revenue; 1,899 employer firmsNAICS 611420: Computer training; HHI 177.4; $4.5B revenue; 1,859 employer firmsNAICS 424710: Petroleum bulk stations and terminals; HHI 579.5; $1.1T revenue; 1,855 employer firmsNAICS 424720: Petroleum and petroleum products merchant wholesalers (except bulk stations and terminals); HHI 454.7; $832.6B revenue; 1,826 employer firmsNAICS 424460: Fish and seafood merchant wholesalers; HHI 58.1; $23.1B revenue; 1,816 employer firmsNAICS 237120: Oil and gas pipeline and related structures construction; HHI 173.6; $44.1B revenue; 1,790 employer firmsNAICS 541720: Research and development in the social sciences and humanities; HHI 390.2; $9.3B revenue; 1,782 employer firmsNAICS 423920: Toy and hobby goods and supplies merchant wholesalers; HHI 298.6; $46.4B revenue; 1,746 employer firmsNAICS 541860: Direct mail advertising; HHI 106; $8.6B revenue; 1,694 employer firmsNAICS 532120: Truck, utility trailer, and RV (recreational vehicle) rental and leasing; HHI 1,081.4; $37.3B revenue; 1,693 employer firmsNAICS 541420: Industrial design services; HHI 187.4; $4B revenue; 1,680 employer firmsNAICS 315250: Cut and sew apparel manufacturing (except contractors); HHI 84.3; $5.5B revenue; 1,678 employer firmsNAICS 333248: All other industrial machinery manufacturing; HHI 65.7; $15.9B revenue; 1,678 employer firmsNAICS 517810: All other telecommunications; HHI 1,232.4; $21.3B revenue; 1,673 employer firmsNAICS 621410: Family planning centers; HHI 90.7; $4.6B revenue; 1,671 employer firmsNAICS 561599: All other travel arrangement and reservation services; HHI 442.5; $25B revenue; 1,661 employer firmsNAICS 339910: Jewelry and silverware manufacturing; HHI 484.5; $7.9B revenue; 1,653 employer firmsNAICS 424940: Tobacco product and electronic cigarette merchant wholesalers; HHI 1,017.7; $143.6B revenue; 1,641 employer firmsNAICS 333310: Commercial and service industry machinery manufacturing; HHI 111.1; $32.1B revenue; 1,630 employer firmsNAICS 485999: All other transit and ground passenger transportation; HHI 143.1; $2.4B revenue; 1,618 employer firmsNAICS 541713: Research and development in nanotechnology; HHI 551.3; $44.5B revenue; 1,605 employer firmsNAICS 811411: Home and garden equipment repair and maintenance; HHI 29.3; $728.6M revenue; 1,587 employer firmsNAICS 333998: All other miscellaneous general purpose machinery manufacturing; HHI 110.1; $22B revenue; 1,565 employer firmsNAICS 339920: Sporting and athletic goods manufacturing; HHI 182.4; $11.1B revenue; 1,562 employer firmsNAICS 339113: Surgical appliance and supplies manufacturing; HHI 417.7; $37.9B revenue; 1,546 employer firmsNAICS 424810: Beer and ale merchant wholesalers; HHI 203.5; $83.1B revenue; 1,510 employer firmsNAICS 327390: Other concrete product manufacturing; HHI 125.9; $18.1B revenue; 1,488 employer firmsNAICS 562119: Other waste collection; HHI 340.3; $3.6B revenue; 1,486 employer firmsNAICS 321918: Other millwork (including flooring); HHI 225.3; $10.2B revenue; 1,459 employer firmsNAICS 213111: Drilling oil and gas wells; HHI 559.2; $18.5B revenue; 1,448 employer firmsNAICS 311611: Animal (except poultry) slaughtering; HHI 1,250.7; $124.7B revenue; 1,429 employer firmsNAICS 221122: Electric power distribution; HHI 210.6; $399.4B revenue; 1,421 employer firmsNAICS 488991: Packing and crating; HHI 100.3; $3.3B revenue; 1,404 employer firmsNAICS 424430: Dairy product (except dried or canned) merchant wholesalers; HHI 345.4; $87.1B revenue; 1,399 employer firmsNAICS 311612: Meat processed from carcasses; HHI 335.9; $81.1B revenue; 1,395 employer firmsNAICS 423140: Motor vehicle parts (used) merchant wholesalers; HHI 861.4; $10.1B revenue; 1,341 employer firmsNAICS 314910: Textile bag and canvas mills; HHI 87.5; $4.4B revenue; 1,340 employer firmsNAICS 611511: Cosmetology and barber schools; HHI 67.4; $2B revenue; 1,322 employer firmsNAICS 611630: Language schools; HHI 266.3; $1.3B revenue; 1,318 employer firmsNAICS 523160: Commodity contracts intermediation; HHI 301.2; $18.2B revenue; 1,317 employer firmsNAICS 721310: Rooming and boarding houses, dormitories, and workers' camps; HHI 492.8; $2B revenue; 1,313 employer firmsNAICS 212321: Construction sand and gravel mining; HHI 90; $8.3B revenue; 1,280 employer firmsNAICS 562998: All other miscellaneous waste management services; HHI 176.8; $3.6B revenue; 1,279 employer firmsNAICS 312140: Distilleries; HHI 699.8; $18.8B revenue; 1,230 employer firmsNAICS 336390: Other motor vehicle parts manufacturing; HHI 125.4; $66.5B revenue; 1,227 employer firmsNAICS 423130: Tire and tube merchant wholesalers; HHI 612.1; $76B revenue; 1,199 employer firmsNAICS 334419: Other electronic component manufacturing; HHI 84.6; $14.2B revenue; 1,189 employer firmsNAICS 517112: Wireless telecommunications carriers (except satellite); HHI 3,074.2; $283B revenue; 1,184 employer firmsNAICS 325412: Pharmaceutical preparation manufacturing; HHI 557; $149.9B revenue; 1,131 employer firmsNAICS 325998: All other miscellaneous chemical product and preparation manufacturing; HHI 121.2; $28.4B revenue; 1,112 employer firmsNAICS 333511: Industrial mold manufacturing; HHI 50.4; $6.3B revenue; 1,095 employer firmsNAICS 712120: Historical sites; HHI 215.7; $1.3B revenue; 1,091 employer firmsNAICS 325510: Paint and coating manufacturing; HHI 785.1; $33.2B revenue; 1,082 employer firmsNAICS 485510: Charter bus industry; HHI 100.3; $4.4B revenue; 1,074 employer firmsNAICS 325211: Plastics material and resin manufacturing; HHI 424; $114.4B revenue; 1,071 employer firmsNAICS 488119: Other airport operations; HHI 247.1; $14.3B revenue; 1,071 employer firmsNAICS 332119: Metal crown, closure, and other metal stamping (except automotive); HHI 54.7; $14.1B revenue; 1,062 employer firmsNAICS 333515: Cutting tool and machine tool accessory manufacturing; HHI 130.2; $5.5B revenue; 1,050 employer firmsNAICS 339112: Surgical and medical instrument manufacturing; HHI 271.3; $40.3B revenue; 1,033 employer firmsNAICS 311920: Coffee and tea manufacturing; HHI 589; $14.7B revenue; 1,030 employer firmsNAICS 314120: Curtain and linen mills; HHI 192.1; $3.3B revenue; 1,004 employer firmsNAICS 611513: Apprenticeship training; HHI 65.5; $2.2B revenue; 1,001 employer firmsNAICS 424590: Other farm product raw material merchant wholesalers; HHI 493.2; $22.7B revenue; 970 employer firmsNAICS 327215: Glass product manufacturing made of purchased glass; HHI 439.3; $16.3B revenue; 942 employer firmsNAICS 424950: Paint, varnish, and supplies merchant wholesalers; HHI 769.9; $22.4B revenue; 939 employer firmsNAICS 321911: Wood window and door manufacturing; HHI 718; $19B revenue; 936 employer firmsNAICS 488330: Navigational services to shipping; HHI 163.5; $5B revenue; 936 employer firmsNAICS 561421: Telephone answering services; HHI 172.4; $2.6B revenue; 934 employer firmsNAICS 424920: Book, periodical, and newspaper merchant wholesalers; HHI 831; $10.3B revenue; 927 employer firmsNAICS 711211: Sports teams and clubs; HHI 77.3; $44B revenue; 926 employer firmsNAICS 523999: Miscellaneous financial investment activities; HHI 1,209.3; $13.9B revenue; 893 employer firmsNAICS 311119: Other animal food manufacturing; HHI 218.9; $47.3B revenue; 890 employer firmsNAICS 332321: Metal window and door manufacturing; HHI 225.5; $19.5B revenue; 876 employer firmsNAICS 323120: Support activities for printing; HHI 262.5; $2.8B revenue; 867 employer firmsNAICS 561591: Convention and visitors bureaus; HHI 118.1; $2.7B revenue; 863 employer firmsNAICS 333517: Machine tool manufacturing; HHI 314.4; $9.3B revenue; 862 employer firmsNAICS 423460: Ophthalmic goods merchant wholesalers; HHI 457.5; $12.7B revenue; 859 employer firmsNAICS 323117: Books printing; HHI 508.4; $5B revenue; 852 employer firmsNAICS 336612: Boat building; HHI 278.8; $16.8B revenue; 845 employer firmsNAICS 334513: Instruments and related products manufacturing for measuring, displaying, and controlling industrial process variables; HHI 297.1; $14.2B revenue; 841 employer firmsNAICS 423330: Roofing, siding, and insulation material merchant wholesalers; HHI 915.9; $74.7B revenue; 828 employer firmsNAICS 334510: Electromedical and electrotherapeutic apparatus manufacturing; HHI 297.6; $39.6B revenue; 822 employer firmsNAICS 524127: Direct title insurance carriers; HHI 1,796.5; $23.4B revenue; 813 employer firmsNAICS 334519: Other measuring and controlling device manufacturing; HHI 228.2; $12.9B revenue; 789 employer firmsNAICS 336211: Motor vehicle body manufacturing; HHI 238.1; $20.3B revenue; 781 employer firmsNAICS 211130: Natural gas extraction; HHI 390.8; $178.7B revenue; 779 employer firmsNAICS 335999: All other miscellaneous electrical equipment and component manufacturing; HHI 332.5; $17.4B revenue; 776 employer firmsNAICS 541360: Geophysical surveying and mapping services; HHI 213.9; $1.5B revenue; 769 employer firmsNAICS 541870: Advertising material distribution services; HHI 311.3; $2.4B revenue; 754 employer firmsNAICS 524114: Direct health and medical insurance carriers; HHI 649.3; $1.3T revenue; 747 employer firmsNAICS 332311: Prefabricated metal building and component manufacturing; HHI 300.3; $14.5B revenue; 746 employer firmsNAICS 311999: All other miscellaneous food manufacturing; HHI 301.1; $16.5B revenue; 741 employer firmsNAICS 333922: Conveyor and conveying equipment manufacturing; HHI 77.5; $14.2B revenue; 734 employer firmsNAICS 512230: Music publishers; HHI 1,380.3; $7B revenue; 726 employer firmsNAICS 316990: Other leather and allied product manufacturing; HHI 249.8; $2B revenue; 722 employer firmsNAICS 321215: Engineered wood member manufacturing; HHI 340.8; $19.8B revenue; 715 employer firmsNAICS 624230: Emergency and other relief services; HHI 477.1; $15B revenue; 714 employer firmsNAICS 337215: Showcase, partition, shelving, and locker manufacturing; HHI 150.5; $9.2B revenue; 710 employer firmsNAICS 712130: Zoos and botanical gardens; HHI 123.1; $5.7B revenue; 710 employer firmsNAICS 311421: Fruit and vegetable canning; HHI 205.6; $27.4B revenue; 709 employer firmsNAICS 332216: Saw blade and handtool manufacturing; HHI 259.4; $7.8B revenue; 699 employer firmsNAICS 811430: Footwear and leather goods repair; HHI 101.7; $208.7M revenue; 690 employer firmsNAICS 333415: Air-conditioning and warm air heating equipment and commercial and industrial refrigeration equipment manufacturing; HHI 348.4; $40.2B revenue; 688 employer firmsNAICS 334413: Semiconductor and related device manufacturing; HHI 897; $62.4B revenue; 675 employer firmsNAICS 332722: Bolt, nut, screw, rivet, and washer manufacturing; HHI 160.2; $12.9B revenue; 669 employer firmsNAICS 325199: All other basic organic chemical manufacturing; HHI 254.6; $100.1B revenue; 663 employer firmsNAICS 335314: Relay and industrial control manufacturing; HHI 293.5; $10.3B revenue; 661 employer firmsNAICS 321992: Prefabricated wood building manufacturing; HHI 494.6; $8.1B revenue; 655 employer firmsNAICS 332996: Fabricated pipe and pipe fitting manufacturing; HHI 111.5; $8B revenue; 655 employer firmsNAICS 315990: Apparel accessories and other apparel manufacturing; HHI 151.4; $1.2B revenue; 650 employer firmsNAICS 325411: Medicinal and botanical manufacturing; HHI 258.3; $13.9B revenue; 650 employer firmsNAICS 221114: Solar electric power generation; HHI 615.9; $5.5B revenue; 644 employer firmsNAICS 541830: Media buying agencies; HHI 441.6; $9B revenue; 632 employer firmsNAICS 334516: Analytical laboratory instrument manufacturing; HHI 273; $19.4B revenue; 629 employer firmsNAICS 488390: Other support activities for water transportation; HHI 251; $2.6B revenue; 617 employer firmsNAICS 334515: Instrument manufacturing for measuring and testing electricity and electrical signals; HHI 336.3; $11.7B revenue; 615 employer firmsNAICS 524113: Direct life insurance carriers; HHI 331.2; $600.7B revenue; 614 employer firmsNAICS 332420: Metal tank (heavy gauge) manufacturing; HHI 195.7; $10.3B revenue; 611 employer firmsNAICS 336310: Motor vehicle gasoline engine and engine parts manufacturing; HHI 662.8; $39B revenue; 610 employer firmsNAICS 334220: Radio and television broadcasting and wireless communications equipment manufacturing; HHI 795.4; $32.3B revenue; 606 employer firmsNAICS 322211: Corrugated and solid fiber box manufacturing; HHI 882.2; $57.2B revenue; 603 employer firmsNAICS 487110: Scenic and sightseeing transportation, land; HHI 199.8; $1.2B revenue; 598 employer firmsNAICS 711120: Dance companies; HHI 207.8; $1B revenue; 592 employer firmsNAICS 332618: Other fabricated wire product manufacturing; HHI 114.2; $6.1B revenue; 589 employer firmsNAICS 488210: Support activities for rail transportation; HHI 258.7; $7.6B revenue; 581 employer firmsNAICS 339992: Musical instrument manufacturing; HHI 547.2; $2.3B revenue; 571 employer firmsNAICS 561491: Repossession services; HHI 207.7; $1.1B revenue; 566 employer firmsNAICS 333120: Construction machinery manufacturing; HHI 857.9; $41.2B revenue; 561 employer firmsNAICS 336370: Motor vehicle metal stamping; HHI 225.7; $40.5B revenue; 556 employer firmsNAICS 522180: Savings institutions and other depository credit intermediation; HHI 384.1; $36.7B revenue; 556 employer firmsNAICS 327110: Pottery, ceramics, and plumbing fixture manufacturing; HHI 954.7; $2.7B revenue; 536 employer firmsNAICS 311340: Nonchocolate confectionery manufacturing; HHI 433.6; $11.5B revenue; 534 employer firmsNAICS 332510: Hardware manufacturing; HHI 437.6; $10.7B revenue; 534 employer firmsNAICS 326299: All other rubber product manufacturing; HHI 229.3; $12.3B revenue; 531 employer firmsNAICS 337127: Institutional furniture manufacturing; HHI 107.7; $5.7B revenue; 531 employer firmsNAICS 532411: Commercial air, rail, and water transportation equipment rental and leasing; HHI 798.4; $13.2B revenue; 526 employer firmsNAICS 332811: Metal heat treating; HHI 517.2; $5.8B revenue; 524 employer firmsNAICS 812331: Linen supply; HHI 351.7; $6.6B revenue; 523 employer firmsNAICS 336320: Motor vehicle electrical and electronic equipment manufacturing; HHI 387.4; $28B revenue; 519 employer firmsNAICS 311412: Frozen specialty food manufacturing; HHI 495; $25.5B revenue; 513 employer firmsNAICS 332994: Small arms, ordnance, and ordnance accessories manufacturing; HHI 427.2; $10.6B revenue; 511 employer firmsNAICS 334310: Audio and video equipment manufacturing; HHI 682.8; $5.1B revenue; 506 employer firmsNAICS 313310: Textile and fabric finishing mills; HHI 386.4; $3.9B revenue; 501 employer firmsNAICS 711212: Racetracks; HHI 570; $8B revenue; 499 employer firmsNAICS 336212: Truck trailer manufacturing; HHI 380.9; $17.1B revenue; 497 employer firmsNAICS 333132: Oil and gas field machinery and equipment manufacturing; HHI 382.7; $11.9B revenue; 496 employer firmsNAICS 339991: Gasket, packing, and sealing device manufacturing; HHI 199.3; $7.2B revenue; 492 employer firmsNAICS 333993: Packaging machinery manufacturing; HHI 233.1; $10.1B revenue; 490 employer firmsNAICS 562219: Other nonhazardous waste treatment and disposal; HHI 303.9; $2B revenue; 486 employer firmsNAICS 322220: Paper bag and coated and treated paper manufacturing; HHI 221.4; $26.8B revenue; 485 employer firmsNAICS 212312: Crushed and broken limestone mining and quarrying; HHI 287.1; $10.6B revenue; 483 employer firmsNAICS 532420: Office machinery and equipment rental and leasing; HHI 393; $2.6B revenue; 478 employer firmsNAICS 713110: Amusement and theme parks; HHI 1,853.4; $19.2B revenue; 478 employer firmsNAICS 512120: Motion picture and video distribution; HHI 259.5; $1.4B revenue; 474 employer firmsNAICS 326150: Urethane and other foam product (except polystyrene) manufacturing; HHI 277.7; $13.2B revenue; 472 employer firmsNAICS 513140: Directory and mailing list publishers; HHI 841.4; $5.1B revenue; 469 employer firmsNAICS 339114: Dental equipment and supplies manufacturing; HHI 664.6; $5.8B revenue; 464 employer firmsNAICS 481219: Other nonscheduled air transportation; HHI 296; $2.3B revenue; 464 employer firmsNAICS 424520: Livestock merchant wholesalers; HHI 382.9; $8.6B revenue; 463 employer firmsNAICS 324121: Asphalt paving mixture and block manufacturing; HHI 192.3; $18.2B revenue; 459 employer firmsNAICS 311942: Spice and extract manufacturing; HHI 370.2; $15.1B revenue; 447 employer firmsNAICS 333914: Measuring, dispensing, and other pumping equipment manufacturing; HHI 294.7; $17.9B revenue; 446 employer firmsNAICS 221210: Natural gas distribution; HHI 386.5; $182.7B revenue; 432 employer firmsNAICS 311520: Ice cream and frozen dessert manufacturing; HHI 691.9; $10.4B revenue; 421 employer firmsNAICS 325612: Polish and other sanitation good manufacturing; HHI 251.7; $8.4B revenue; 421 employer firmsNAICS 424110: Printing and writing paper merchant wholesalers; HHI 639.4; $18.5B revenue; 421 employer firmsNAICS 424440: Poultry and poultry product merchant wholesalers; HHI 209.1; $14.2B revenue; 421 employer firmsNAICS 325180: Other basic inorganic chemical manufacturing; HHI 255.2; $41.9B revenue; 413 employer firmsNAICS 493130: Farm product warehousing and storage; HHI 118; $1B revenue; 411 employer firmsNAICS 336999: All other transportation equipment manufacturing; HHI 1,229.2; $9.8B revenue; 409 employer firmsNAICS 334511: Search, detection, navigation, guidance, aeronautical, and nautical system and instrument manufacturing; HHI 1,200.2; $53.5B revenue; 404 employer firmsNAICS 335132: Commercial, industrial, and institutional electric lighting fixture manufacturing; HHI 387.9; $7B revenue; 404 employer firmsNAICS 221320: Sewage treatment facilities; HHI 1,003.4; $2.4B revenue; 401 employer firmsNAICS 311710: Seafood product preparation and packaging; HHI 229.1; $14.6B revenue; 401 employer firmsNAICS 333241: Food product machinery manufacturing; HHI 273.6; $6.6B revenue; 399 employer firmsNAICS 311513: Cheese manufacturing; HHI 364.1; $66.3B revenue; 397 employer firmsNAICS 332911: Industrial valve manufacturing; HHI 244.8; $14.3B revenue; 395 employer firmsNAICS 333413: Industrial and commercial fan and blower and air purification equipment manufacturing; HHI 185.8; $8B revenue; 395 employer firmsNAICS 423410: Photographic equipment and supplies merchant wholesalers; HHI 763.2; $9.5B revenue; 391 employer firmsNAICS 311821: Cookie and cracker manufacturing; HHI 523.9; $10.3B revenue; 386 employer firmsNAICS 336350: Motor vehicle transmission and power train parts manufacturing; HHI 567.7; $47.2B revenue; 383 employer firmsNAICS 335313: Switchgear and switchboard apparatus manufacturing; HHI 621.9; $15B revenue; 372 employer firmsNAICS 481111: Scheduled passenger air transportation; HHI 1,465.5; $228.9B revenue; 372 employer firmsNAICS 621991: Blood and organ banks; HHI 573.6; $19.9B revenue; 371 employer firmsNAICS 311941: Mayonnaise, dressing, and other prepared sauce manufacturing; HHI 454.1; $14.7B revenue; 361 employer firmsNAICS 337126: Household furniture (except wood and upholstered) manufacturing; HHI 631.4; $3.7B revenue; 361 employer firmsNAICS 335931: Current-carrying wiring device manufacturing; HHI 313; $8.4B revenue; 359 employer firmsNAICS 325520: Adhesive manufacturing; HHI 359.6; $20.1B revenue; 358 employer firmsNAICS 524128: Other direct insurance (except life, health, and medical) carriers; HHI 1,189.4; $25.3B revenue; 354 employer firmsNAICS 327212: Other pressed and blown glass and glassware manufacturing; HHI 766.1; $3.6B revenue; 349 employer firmsNAICS 311824: Dry pasta, dough, and flour mixes manufacturing from purchased flour; HHI 641.6; $15.4B revenue; 344 employer firmsNAICS 335312: Motor and generator manufacturing; HHI 675.7; $13.8B revenue; 336 employer firmsNAICS 337910: Mattress manufacturing; HHI 981.5; $8.8B revenue; 336 employer firmsNAICS 339940: Office supplies (except paper) manufacturing; HHI 780.7; $3.2B revenue; 336 employer firmsNAICS 327120: Clay building material and refractories manufacturing; HHI 256.4; $6.7B revenue; 334 employer firmsNAICS 483113: Coastal and great lakes freight transportation; HHI 503.3; $10B revenue; 334 employer firmsNAICS 326291: Rubber product manufacturing for mechanical use; HHI 333.6; $7.7B revenue; 328 employer firmsNAICS 336360: Motor vehicle seating and interior trim manufacturing; HHI 575.7; $29.9B revenue; 328 employer firmsNAICS 325314: Fertilizer (mixing only) manufacturing; HHI 421.5; $5.5B revenue; 321 employer firmsNAICS 333414: Heating equipment (except warm air furnaces) manufacturing; HHI 267.3; $6.9B revenue; 321 employer firmsNAICS 562211: Hazardous waste treatment and disposal; HHI 925.1; $9B revenue; 321 employer firmsNAICS 326113: Unlaminated plastics film and sheet (except packaging) manufacturing; HHI 294.7; $17B revenue; 320 employer firmsNAICS 332114: Custom roll forming; HHI 225.1; $6.9B revenue; 319 employer firmsNAICS 322299: All other converted paper product manufacturing; HHI 165.5; $5.6B revenue; 318 employer firmsNAICS 325991: Custom compounding of purchased resins; HHI 240.6; $13.7B revenue; 318 employer firmsNAICS 326112: Plastics packaging film and sheet (including laminated) manufacturing; HHI 314.1; $17.1B revenue; 316 employer firmsNAICS 333243: Sawmill, woodworking, and paper machinery manufacturing; HHI 255; $4B revenue; 316 employer firmsNAICS 337211: Wood office furniture manufacturing; HHI 944.9; $3.3B revenue; 316 employer firmsNAICS 713920: Skiing facilities; HHI 650.5; $3.4B revenue; 315 employer firmsNAICS 325414: Biological product (except diagnostic) manufacturing; HHI 404.8; $47.3B revenue; 304 employer firmsNAICS 311615: Poultry processing; HHI 568.1; $89.9B revenue; 302 employer firmsNAICS 562112: Hazardous waste collection; HHI 401.8; $3.2B revenue; 302 employer firmsNAICS 483211: Inland water freight transportation; HHI 870.5; $7.6B revenue; 299 employer firmsNAICS 333994: Industrial process furnace and oven manufacturing; HHI 190; $3.5B revenue; 298 employer firmsNAICS 311351: Chocolate and confectionery manufacturing from cacao beans; HHI 960.7; $5.3B revenue; 296 employer firmsNAICS 322230: Stationery product manufacturing; HHI 511.7; $6.3B revenue; 295 employer firmsNAICS 334416: Capacitor, resistor, coil, transformer, and other inductor manufacturing; HHI 226.3; $3.3B revenue; 285 employer firmsNAICS 333519: Rolling mill and other metalworking machinery manufacturing; HHI 190.5; $3B revenue; 280 employer firmsNAICS 622310: Specialty (except psychiatric and substance abuse) hospitals; HHI 334.8; $58.4B revenue; 280 employer firmsNAICS 333924: Industrial truck, trailer, and stacker machinery manufacturing; HHI 699.4; $13.2B revenue; 277 employer firmsNAICS 326111: Plastics bag and pouch manufacturing; HHI 473.1; $16.4B revenue; 276 employer firmsNAICS 333923: Overhead traveling crane, hoist, and monorail system manufacturing; HHI 957.2; $9.1B revenue; 276 employer firmsNAICS 212319: Other crushed and broken stone mining and quarrying; HHI 285; $3.2B revenue; 275 employer firmsNAICS 331523: Nonferrous metal die-casting foundries; HHI 282.5; $7.6B revenue; 273 employer firmsNAICS 485113: Bus and other motor vehicle transit systems; HHI 757.3; $4.1B revenue; 273 employer firmsNAICS 488320: Marine cargo handling; HHI 592.9; $10.6B revenue; 270 employer firmsNAICS 326122: Plastics pipe and pipe fitting manufacturing; HHI 419.8; $18.2B revenue; 269 employer firmsNAICS 312113: Ice manufacturing; HHI 1,274.3; $1.2B revenue; 268 employer firmsNAICS 711190: Other performing arts companies; HHI 2,416.3; $1.7B revenue; 268 employer firmsNAICS 483212: Inland water passenger transportation; HHI 423.6; $680.9M revenue; 267 employer firmsNAICS 221112: Fossil fuel electric power generation; HHI 180.8; $85.5B revenue; 265 employer firmsNAICS 488310: Port and harbor operations; HHI 600.8; $4.4B revenue; 263 employer firmsNAICS 321114: Wood preservation; HHI 926.6; $10.5B revenue; 250 employer firmsNAICS 487990: Scenic and sightseeing transportation, other; HHI 668.8; $776.6M revenue; 250 employer firmsNAICS 326191: Plastics plumbing fixture manufacturing; HHI 517.7; $6.1B revenue; 249 employer firmsNAICS 336330: Motor vehicle steering and suspension components (except spring) manufacturing; HHI 487.2; $17B revenue; 248 employer firmsNAICS 333618: Other engine equipment manufacturing; HHI 1,303.1; $28.1B revenue; 246 employer firmsNAICS 311511: Fluid milk manufacturing; HHI 652.3; $50.6B revenue; 241 employer firmsNAICS 311423: Dried and dehydrated food manufacturing; HHI 478.2; $8.6B revenue; 239 employer firmsNAICS 311911: Roasted nuts and peanut butter manufacturing; HHI 370.4; $14.4B revenue; 239 employer firmsNAICS 311211: Flour milling; HHI 738.9; $18.5B revenue; 238 employer firmsNAICS 333912: Air and gas compressor manufacturing; HHI 377.8; $8.9B revenue; 238 employer firmsNAICS 423520: Coal and other mineral and ore merchant wholesalers; HHI 776.6; $24B revenue; 238 employer firmsNAICS 333995: Fluid power cylinder and actuator manufacturing; HHI 439; $7.2B revenue; 236 employer firmsNAICS 331529: Other nonferrous metal foundries (except die-casting); HHI 588.4; $2.8B revenue; 230 employer firmsNAICS 313210: Broadwoven fabric mills; HHI 441.9; $3.6B revenue; 228 employer firmsNAICS 483111: Deep sea freight transportation; HHI 1,174; $9.8B revenue; 227 employer firmsNAICS 212311: Dimension stone mining and quarrying; HHI 167.1; $770.3M revenue; 223 employer firmsNAICS 333131: Mining machinery and equipment manufacturing; HHI 296.2; $4.4B revenue; 223 employer firmsNAICS 721120: Casino hotels; HHI 465.5; $75.9B revenue; 223 employer firmsNAICS 315120: Apparel knitting mills; HHI 273.8; $1.2B revenue; 222 employer firmsNAICS 561450: Credit bureaus; HHI 1,559.8; $14.7B revenue; 222 employer firmsNAICS 332439: Other metal container manufacturing; HHI 491.5; $4.6B revenue; 218 employer firmsNAICS 335311: Power, distribution, and specialty transformer manufacturing; HHI 471.8; $9.6B revenue; 217 employer firmsNAICS 713210: Casinos (except casino hotels); HHI 207.6; $18.4B revenue; 217 employer firmsNAICS 313110: Fiber, yarn, and thread mills; HHI 952.5; $6.6B revenue; 215 employer firmsNAICS 311813: Frozen cakes, pies, and other pastries manufacturing; HHI 301.5; $8.2B revenue; 214 employer firmsNAICS 331511: Iron foundries; HHI 593.1; $11.9B revenue; 214 employer firmsNAICS 325320: Pesticide and other agricultural chemical manufacturing; HHI 1,088.7; $18.6B revenue; 209 employer firmsNAICS 325413: In-vitro diagnostic substance manufacturing; HHI 752.2; $23.1B revenue; 207 employer firmsNAICS 334512: Automatic environmental control manufacturing for residential, commercial, and appliance use; HHI 602.8; $3B revenue; 207 employer firmsNAICS 326212: Tire retreading; HHI 327; $1.6B revenue; 206 employer firmsNAICS 326160: Plastics bottle manufacturing; HHI 700.5; $17.1B revenue; 200 employer firmsNAICS 522210: Credit card issuing; HHI 1,245.6; $161.6B revenue; 195 employer firmsNAICS 213115: Support activities for nonmetallic minerals (except fuels) mining; HHI 295; $1.1B revenue; 193 employer firmsNAICS 326130: Laminated plastics plate, sheet (except packaging), and shape manufacturing; HHI 368.9; $4.7B revenue; 190 employer firmsNAICS 326220: Rubber and plastics hoses and belting manufacturing; HHI 600.4; $7.1B revenue; 187 employer firmsNAICS 332410: Power boiler and heat exchanger manufacturing; HHI 482; $7.1B revenue; 185 employer firmsNAICS 314110: Carpet and rug mills; HHI 1,110.9; $9.3B revenue; 184 employer firmsNAICS 313230: Nonwoven fabric mills; HHI 322.8; $7.7B revenue; 182 employer firmsNAICS 325910: Printing ink manufacturing; HHI 667.2; $4.6B revenue; 182 employer firmsNAICS 512199: Other motion picture and video industries; HHI 709.1; $235.9M revenue; 179 employer firmsNAICS 333613: Mechanical power transmission equipment manufacturing; HHI 354.8; $5.5B revenue; 176 employer firmsNAICS 316210: Footwear manufacturing; HHI 523.1; $1.6B revenue; 175 employer firmsNAICS 332919: Other metal valve and pipe fitting manufacturing; HHI 230.5; $4.9B revenue; 175 employer firmsNAICS 321211: Hardwood veneer and plywood manufacturing; HHI 579.2; $3.5B revenue; 174 employer firmsNAICS 337214: Office furniture (except wood) manufacturing; HHI 1,075; $5.8B revenue; 174 employer firmsNAICS 336110: Automobile and light duty motor vehicle manufacturing; HHI 1,185.8; $357.2B revenue; 170 employer firmsNAICS 335929: Other communication and energy wire manufacturing; HHI 837.9; $10B revenue; 169 employer firmsNAICS 333921: Elevator and moving stairway manufacturing; HHI 991.9; $4.3B revenue; 168 employer firmsNAICS 334417: Electronic connector manufacturing; HHI 582.5; $7.1B revenue; 168 employer firmsNAICS 333612: Speed changer, industrial high-speed drive, and gear manufacturing; HHI 427; $4.1B revenue; 167 employer firmsNAICS 212114: Surface coal mining; HHI 612.2; $10.4B revenue; 163 employer firmsNAICS 334514: Totalizing fluid meter and counting device manufacturing; HHI 422.6; $5.3B revenue; 163 employer firmsNAICS 331210: Iron and steel pipe and tube manufacturing from purchased steel; HHI 388.8; $21.4B revenue; 162 employer firmsNAICS 486210: Pipeline transportation of natural gas; HHI 837.6; $38.3B revenue; 161 employer firmsNAICS 322219: Other paperboard container manufacturing; HHI 872.1; $9.2B revenue; 159 employer firmsNAICS 331221: Rolled steel shape manufacturing; HHI 508.3; $16.1B revenue; 158 employer firmsNAICS 212390: Other nonmetallic mineral mining and quarrying; HHI 674.4; $5.8B revenue; 156 employer firmsNAICS 316110: Leather and hide tanning and finishing; HHI 1,155.6; $1.1B revenue; 156 employer firmsNAICS 332111: Iron and steel forging; HHI 458.9; $7.2B revenue; 155 employer firmsNAICS 313220: Narrow fabric mills and schiffli machine embroidery; HHI 385.1; $983.7M revenue; 154 employer firmsNAICS 332992: Small arms ammunition manufacturing; HHI 1,766.1; $5.8B revenue; 151 employer firmsNAICS 331222: Steel wire drawing; HHI 297.3; $8.5B revenue; 150 employer firmsNAICS 335991: Carbon and graphite product manufacturing; HHI 702.9; $4B revenue; 150 employer firmsNAICS 327992: Ground or treated mineral and earth manufacturing; HHI 503.2; $6.4B revenue; 148 employer firmsNAICS 327993: Mineral wool manufacturing; HHI 1,106; $7.9B revenue; 145 employer firmsNAICS 333242: Semiconductor machinery manufacturing; HHI 1,153; $13.8B revenue; 144 employer firmsNAICS 331492: Secondary smelting, refining, and alloying of nonferrous metal (except copper and aluminum); HHI 357.4; $8.6B revenue; 143 employer firmsNAICS 325212: Synthetic rubber manufacturing; HHI 473; $8.5B revenue; 141 employer firmsNAICS 311411: Frozen fruit, juice, and vegetable manufacturing; HHI 1,035.4; $18.3B revenue; 140 employer firmsNAICS 336510: Railroad rolling stock manufacturing; HHI 1,017.4; $12B revenue; 140 employer firmsNAICS 313320: Fabric coating mills; HHI 288.6; $2.9B revenue; 138 employer firmsNAICS 336340: Motor vehicle brake system manufacturing; HHI 555.2; $10.2B revenue; 137 employer firmsNAICS 339994: Broom, brush, and mop manufacturing; HHI 598.7; $2.8B revenue; 136 employer firmsNAICS 331420: Copper rolling, drawing, extruding, and alloying; HHI 527; $35.9B revenue; 135 employer firmsNAICS 335210: Small electrical appliance manufacturing; HHI 1,093.7; $3.7B revenue; 135 employer firmsNAICS 213114: Support activities for metal mining; HHI 757.4; $1.5B revenue; 132 employer firmsNAICS 524130: Reinsurance carriers; HHI 1,119.5; $98.7B revenue; 132 employer firmsNAICS 311514: Dry, condensed, and evaporated dairy product manufacturing; HHI 478.9; $21.1B revenue; 129 employer firmsNAICS 331513: Steel foundries (except investment); HHI 730; $3.7B revenue; 121 employer firmsNAICS 333996: Fluid power pump and motor manufacturing; HHI 1,021.9; $5.3B revenue; 120 employer firmsNAICS 332117: Powder metallurgy part manufacturing; HHI 387.3; $2.2B revenue; 119 employer firmsNAICS 213113: Support activities for coal mining; HHI 395.3; $889.3M revenue; 118 employer firmsNAICS 325193: Ethyl alcohol manufacturing; HHI 470.2; $50B revenue; 118 employer firmsNAICS 325992: Photographic film, paper, plate, chemical, and copy toner manufacturing; HHI 1,252.2; $4.9B revenue; 115 employer firmsNAICS 334517: Irradiation apparatus manufacturing; HHI 1,573.9; $9.2B revenue; 111 employer firmsNAICS 335932: Noncurrent-carrying wiring device manufacturing; HHI 648.3; $9.6B revenue; 111 employer firmsNAICS 321219: Reconstituted wood product manufacturing; HHI 882.7; $11.2B revenue; 109 employer firmsNAICS 561613: Armored car services; HHI 2,721; $3.6B revenue; 108 employer firmsNAICS 325220: Artificial and synthetic fibers and filaments manufacturing; HHI 712.4; $6.8B revenue; 107 employer firmsNAICS 332991: Ball and roller bearing manufacturing; HHI 900.1; $5.8B revenue; 107 employer firmsNAICS 314994: Rope, cordage, twine, tire cord, and tire fabric mills; HHI 607; $1.9B revenue; 106 employer firmsNAICS 486110: Pipeline transportation of crude oil; HHI 910.7; $15B revenue; 102 employer firmsNAICS 325130: Synthetic dye and pigment manufacturing; HHI 852.6; $6.4B revenue; 100 employer firmsNAICS 335921: Fiber optic cable manufacturing; HHI 1,364.7; $3.8B revenue; 99 employer firmsNAICS 313240: Knit fabric mills; HHI 494.4; $1.3B revenue; 97 employer firmsNAICS 327310: Cement manufacturing; HHI 1,033.8; $11.7B revenue; 95 employer firmsNAICS 327420: Gypsum product manufacturing; HHI 1,934.6; $9.2B revenue; 95 employer firmsNAICS 333112: Lawn and garden tractor and home lawn and garden equipment manufacturing; HHI 976; $9.6B revenue; 94 employer firmsNAICS 325120: Industrial gas manufacturing; HHI 1,299.4; $16.4B revenue; 93 employer firmsNAICS 311225: Fats and oils refining and blending; HHI 891; $17.8B revenue; 91 employer firmsNAICS 322120: Paper mills; HHI 617.4; $32.6B revenue; 89 employer firmsNAICS 325315: Compost manufacturing; HHI 642.8; $755.9M revenue; 88 employer firmsNAICS 486910: Pipeline transportation of refined petroleum products; HHI 1,007; $14B revenue; 85 employer firmsNAICS 331410: Nonferrous metal (except aluminum) smelting and refining; HHI 881.9; $12.3B revenue; 81 employer firmsNAICS 311230: Breakfast cereal manufacturing; HHI 2,539.1; $11B revenue; 77 employer firmsNAICS 221117: Biomass electric power generation; HHI 638; $947.9M revenue; 75 employer firmsNAICS 212323: Kaolin, clay, and ceramic and refractory minerals mining; HHI 852.7; $1.6B revenue; 74 employer firmsNAICS 221121: Electric bulk power transmission and control; HHI 602; $17.6B revenue; 74 employer firmsNAICS 331110: Iron and steel mills and ferroalloy manufacturing; HHI 1,071.9; $129.8B revenue; 73 employer firmsNAICS 212115: Underground coal mining; HHI 702; $17.1B revenue; 72 employer firmsNAICS 324122: Asphalt shingle and coating materials manufacturing; HHI 1,366; $15B revenue; 72 employer firmsNAICS 326211: Tire manufacturing (except retreading); HHI 1,279.1; $21.3B revenue; 72 employer firmsNAICS 327332: Concrete pipe manufacturing; HHI 857.2; $1.7B revenue; 69 employer firmsNAICS 311212: Rice milling; HHI 745.4; $4.6B revenue; 67 employer firmsNAICS 322130: Paperboard mills; HHI 1,461.5; $41.2B revenue; 63 employer firmsNAICS 331314: Secondary smelting and alloying of aluminum; HHI 766; $9B revenue; 63 employer firmsNAICS 455110: Department stores; HHI 2,386.8; $60.7B revenue; 63 employer firmsNAICS 212313: Crushed and broken granite mining and quarrying; HHI 1,665.6; $3.1B revenue; 62 employer firmsNAICS 332431: Metal can manufacturing; HHI 1,201.7; $21.6B revenue; 62 employer firmsNAICS 327211: Flat glass manufacturing; HHI 1,437.3; $5.3B revenue; 61 employer firmsNAICS 325312: Phosphatic fertilizer manufacturing; HHI 2,402.4; $8.9B revenue; 60 employer firmsNAICS 812922: One-hour photofinishing; HHI 423.1; $17M revenue; 59 employer firmsNAICS 336213: Motor home manufacturing; HHI 2,023.2; $7.4B revenue; 58 employer firmsNAICS 621491: HMO medical centers; HHI 2,449.2; $43.6B revenue; 56 employer firmsNAICS 321212: Softwood veneer and plywood manufacturing; HHI 1,036.2; $6.6B revenue; 52 employer firmsNAICS 324110: Petroleum refineries; HHI 853.2; $825.2B revenue; 50 employer firmsNAICS 325920: Explosives manufacturing; HHI 1,014.1; $3.2B revenue; 48 employer firmsNAICS 221118: Other electric power generation; HHI 881.4; $41.5M revenue; 46 employer firmsNAICS 485119: Other urban transit systems; HHI 1,070.6; $227M revenue; 44 employer firmsNAICS 311221: Wet corn milling and starch manufacturing; HHI 1,974.3; $17.5B revenue; 40 employer firmsNAICS 325194: Cyclic crude, intermediate, and gum and wood chemical manufacturing; HHI 1,294.9; $5.5B revenue; 40 employer firmsNAICS 331315: Aluminum sheet, plate, and foil manufacturing; HHI 1,497.5; $22.6B revenue; 38 employer firmsNAICS 336992: Military armored vehicle, tank, and tank component manufacturing; HHI 2,289.1; $6.9B revenue; 38 employer firmsNAICS 311213: Malt manufacturing; HHI 1,909.3; $995.5M revenue; 37 employer firmsNAICS 311314: Cane sugar manufacturing; HHI 1,189.5; $6.6B revenue; 34 employer firmsNAICS 336419: Other guided missile and space vehicle parts and auxiliary equipment manufacturing; HHI 1,378.8; $2.4B revenue; 33 employer firmsNAICS 327410: Lime manufacturing; HHI 1,931.3; $2.8B revenue; 29 employer firmsNAICS 221116: Geothermal electric power generation; HHI 2,055.1; $1.1B revenue; 22 employer firmsNAICS 212290: Other metal ore mining; HHI 1,888.9; $2B revenue; 21 employer firmsNAICS 485111: Mixed mode transit systems; HHI 1,638; $8.9M revenue; 20 employer firmsNAICS 322110: Pulp mills; HHI 2,005; $8.7B revenue; 18 employer firmsNAICS 336414: Guided missile and space vehicle manufacturing; HHI 3,377.1; $14.9B revenue; 18 employer firmsNAICS 523210: Securities and commodity exchanges; HHI 2,434.7; $16.5B revenue; 17 employer firmsNAICS 311313: Beet sugar manufacturing; HHI 2,075; $4.4B revenue; 12 employer firmsNAICS 521110: Monetary authorities - central bank; HHI 3,074; $170.4B revenue; 12 employer firmsNAICS 483112: Deep sea passenger transportation; HHI 3,436.1; $23.2B revenue; 72 employer firms

Selected record

Deep sea passenger transportation

NAICS 483112
HHI
3,436.1
Revenue
$23.2B
CR4
97.7%
Employer firms
72
Open industry profile

High-HHI tail

Highest measured rows

01Deep sea passenger transportationNAICS 483112 / $23.2B3,436.102Guided missile and space vehicle manufacturingNAICS 336414 / $14.9B3,377.103Wireless telecommunications carriers (except satellite)NAICS 517112 / $283B3,074.204Monetary authorities - central bankNAICS 521110 / $170.4B3,07405Passenger car rentalNAICS 532111 / $38.8B3,029.206Armored car servicesNAICS 561613 / $3.6B2,721

Circle position and rank use Census-published HHI only. Disclosure-withheld values remain in the directory and are excluded from measured comparisons.

Economy composition map

See where economic scale and concentration meet

Each tile is one six-digit NAICS industry. Area follows the selected economic measure; color carries either published HHI or sector identity.

Size tiles by
Color tiles by
Current scopeAll detailed industries899 detailed rows
Area / Revenue$50.3TSales, shipments, or revenue
Color / HHI bands679 published220 HHI disclosure-withheld
Scope median HHI284Unweighted across published rows

Area = revenue / Color = hhi bands

17 sector groups / 899 positive-value industries

2022 Economic Census
0-499500-9991,000-1,4991,500-2,4992,500+Withheld

Active industry

Direct health and medical insurance carriersNAICS 524114

Revenue

$1.3T

2.58% of current scope / 22.2% of sector

HHI
649.3
CR4
44.2%
Employment
586,637
Employer firms
747
Open evidence profile

Largest by revenue

01Direct health and medical insurance carriers524114$1.3T02Drugs and druggists' sundries merchant wholesalers424210$1.3T03General medical and surgical hospitals622110$1.3T04New car dealers441110$1.2T

Tile area represents revenue within this detailed-industry scope. HHI is a national NAICS screen, not a legal antitrust market. Disclosure-withheld values remain mapped and use the gray band.

Census industry directory

Compare the full NAICS hierarchy

HHI and concentration ratios are based on national sales, value of shipments, or revenue for employer firms.

899 of 1,866
NAICS 483112Deep sea passenger transportationDetailed industry
HHI3,436.1CR497.7%Revenue$23.2B
NAICS 336414Guided missile and space vehicle manufacturingDetailed industry
HHI3,377.1CR496.7%Revenue$14.9B
NAICS 517112Wireless telecommunications carriers (except satellite)Detailed industry
HHI3,074.2CR496.6%Revenue$283B
NAICS 521110Monetary authorities - central bankDetailed industry
HHI3,074CR476.6%Revenue$170.4B
NAICS 532111Passenger car rentalDetailed industry
HHI3,029.2CR489.6%Revenue$38.8B
NAICS 561613Armored car servicesDetailed industry
HHI2,721CR489.9%Revenue$3.6B
NAICS 311230Breakfast cereal manufacturingDetailed industry
HHI2,539.1CR486.6%Revenue$11B
NAICS 621491HMO medical centersDetailed industry
HHI2,449.2CR488.8%Revenue$43.6B
NAICS 523210Securities and commodity exchangesDetailed industry
HHI2,434.7CR495.1%Revenue$16.5B
NAICS 711190Other performing arts companiesDetailed industry
HHI2,416.3CR484.7%Revenue$1.7B
NAICS 325312Phosphatic fertilizer manufacturingDetailed industry
HHI2,402.4CR486.4%Revenue$8.9B
NAICS 455110Department storesDetailed industry
HHI2,386.8CR484.9%Revenue$60.7B
NAICS 336992Military armored vehicle, tank, and tank component manufacturingDetailed industry
HHI2,289.1CR485.1%Revenue$6.9B
NAICS 311313Beet sugar manufacturingDetailed industry
HHI2,075CR478.6%Revenue$4.4B
NAICS 221116Geothermal electric power generationDetailed industry
HHI2,055.1CR483.6%Revenue$1.1B
NAICS 336213Motor home manufacturingDetailed industry
HHI2,023.2CR482.5%Revenue$7.4B
NAICS 322110Pulp millsDetailed industry
HHI2,005CR478.2%Revenue$8.7B
NAICS 459410Office supplies and stationery retailersDetailed industry
HHI2,004.5CR478.2%Revenue$32.7B
NAICS 311221Wet corn milling and starch manufacturingDetailed industry
HHI1,974.3CR479.9%Revenue$17.5B
NAICS 327420Gypsum product manufacturingDetailed industry
HHI1,934.6CR484.1%Revenue$9.2B
NAICS 327410Lime manufacturingDetailed industry
HHI1,931.3CR482.6%Revenue$2.8B
NAICS 311213Malt manufacturingDetailed industry
HHI1,909.3CR484.2%Revenue$995.5M
NAICS 212290Other metal ore miningDetailed industry
HHI1,888.9CR478.7%Revenue$2B
NAICS 713110Amusement and theme parksDetailed industry
HHI1,853.4CR475.1%Revenue$19.2B
NAICS 524127Direct title insurance carriersDetailed industry
HHI1,796.5CR480.2%Revenue$23.4B

A NAICS industry is a statistical classification, not a legally defined antitrust market. Use these national revenue concentration measures to screen where deeper product and geographic market analysis may be warranted, not to infer market power or liability.

U.S. Industry Concentration Atlas | Antitrust Radar