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 branchConstructionSector / level 2 of 6
Detailed descendants31Six-digit records in scope
Published HHI83.9%26 published / 5 withheld
Revenue$2.9TExact Census hierarchy row

Direct subsector records

Construction / bars normalized to the largest visible revenue value

Selected classification

NAICS 23

Construction

Sector with 31 detailed descendants.

Median HHI
19.4
Revenue
$2.9T
Employment
7.5M
Employer firms
787.3K

Curated antitrust layer

Research coverage gap

Profile 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 scopeConstruction31 detailed rows
Published HHI2683.9% of scope
Median HHI19.4Median CR4 6.4%
Revenue represented$2.9T5 HHI disclosure-withheld

Detailed-industry cross-section

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

5 withheld
NAICS 236118: Residential remodelers; HHI 1.9; $129.1B revenue; 127,652 employer firmsNAICS 238220: Plumbing, heating, and air-conditioning contractors; HHI 9.3; $297.6B revenue; 112,088 employer firmsNAICS 238210: Electrical contractors and other wiring installation contractors; HHI 11.6; $249.2B revenue; 78,975 employer firmsNAICS 236115: New single-family housing construction (except for-sale builders); HHI 14.5; $117.8B revenue; 54,266 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 238320: Painting and wall covering contractors; HHI 2.9; $33B revenue; 38,036 employer firmsNAICS 238350: Finish carpentry contractors; HHI 9.1; $42.7B revenue; 31,865 employer firmsNAICS 238110: Poured concrete foundation and structure contractors; HHI 12.8; $78.7B revenue; 22,865 employer firmsNAICS 238140: Masonry contractors; HHI 9; $28.6B revenue; 17,971 employer firmsNAICS 238330: Flooring contractors; HHI 12.4; $24.2B revenue; 17,269 employer firmsNAICS 238130: Framing contractors; HHI 20; $29.1B revenue; 13,016 employer firmsNAICS 238340: Tile and terrazzo contractors; HHI 18.6; $12.2B revenue; 10,469 employer firmsNAICS 237110: Water and sewer line and related structures construction; HHI 11.1; $56.9B revenue; 10,380 employer firmsNAICS 237310: Highway, street, and bridge construction; HHI 19.6; $160.3B revenue; 8,901 employer firmsNAICS 238390: Other building finishing contractors; HHI 23.2; $14.4B revenue; 7,065 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 238190: Other foundation, structure, and building exterior contractors; HHI 27.4; $10.6B revenue; 5,722 employer firmsNAICS 237130: Power and communication line and related structures construction; HHI 156.2; $102.9B revenue; 5,526 employer firmsNAICS 237990: Other heavy and civil engineering construction; HHI 139.4; $34B revenue; 4,377 employer firmsNAICS 238120: Structural steel and precast concrete contractors; HHI 25.4; $19.7B revenue; 3,898 employer firmsNAICS 236116: New multifamily housing construction (except for-sale builders); HHI 22.8; $77.9B revenue; 3,811 employer firmsNAICS 236210: Industrial building construction; HHI 90.6; $36.2B revenue; 2,972 employer firmsNAICS 237120: Oil and gas pipeline and related structures construction; HHI 173.6; $44.1B revenue; 1,790 employer firmsNAICS 236117: New housing for-sale builders; HHI 248.9; $276.6B revenue; 18,094 employer firms

Selected record

New housing for-sale builders

NAICS 236117
HHI
248.9
Revenue
$276.6B
CR4
24.6%
Employer firms
18,094
Open industry profile

High-HHI tail

Highest measured rows

01New housing for-sale buildersNAICS 236117 / $276.6B248.902Other building equipment contractorsNAICS 238290 / $42.4B221.803Oil and gas pipeline and related structures constructionNAICS 237120 / $44.1B173.604Power and communication line and related structures constructionNAICS 237130 / $102.9B156.205Other heavy and civil engineering constructionNAICS 237990 / $34B139.406Industrial building constructionNAICS 236210 / $36.2B90.6

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 scopeConstruction31 detailed rows
Area / Revenue$2.9TSales, shipments, or revenue
Color / NAICS sector26 published5 HHI disclosure-withheld
Scope median HHI19.4Unweighted across published rows

Area = revenue / Color = naics sector

1 sector groups / 31 positive-value industries

2022 Economic Census

Active industry

Commercial and institutional building constructionNAICS 236220

Revenue

$585.6B

20.05% of current scope / 20.1% of sector

HHI
23.1
CR4
6.8%
Employment
656,625
Employer firms
39,454
Open evidence profile

Largest by revenue

01Commercial and institutional building construction236220$585.6B02Plumbing, heating, and air-conditioning contractors238220$297.6B03New housing for-sale builders236117$276.6B04Electrical contractors and other wiring installation contractors238210$249.2B

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.

31 of 1,866
NAICS 236117New housing for-sale buildersDetailed industry
HHI248.9CR424.6%Revenue$276.6B
NAICS 238290Other building equipment contractorsDetailed industry
HHI221.8CR427.7%Revenue$42.4B
NAICS 237120Oil and gas pipeline and related structures constructionDetailed industry
HHI173.6CR421.6%Revenue$44.1B
NAICS 237130Power and communication line and related structures constructionDetailed industry
HHI156.2CR419.2%Revenue$102.9B
NAICS 237990Other heavy and civil engineering constructionDetailed industry
HHI139.4CR417.9%Revenue$34B
NAICS 236210Industrial building constructionDetailed industry
HHI90.6CR413.1%Revenue$36.2B
NAICS 238190Other foundation, structure, and building exterior contractorsDetailed industry
HHI27.4CR48.3%Revenue$10.6B
NAICS 238120Structural steel and precast concrete contractorsDetailed industry
HHI25.4CR46.9%Revenue$19.7B
NAICS 238390Other building finishing contractorsDetailed industry
HHI23.2CR46.6%Revenue$14.4B
NAICS 236220Commercial and institutional building constructionDetailed industry
HHI23.1CR46.8%Revenue$585.6B
NAICS 236116New multifamily housing construction (except for-sale builders)Detailed industry
HHI22.8CR45.5%Revenue$77.9B
NAICS 238130Framing contractorsDetailed industry
HHI20CR45.9%Revenue$29.1B
NAICS 237310Highway, street, and bridge constructionDetailed industry
HHI19.6CR45.4%Revenue$160.3B
NAICS 238150Glass and glazing contractorsDetailed industry
HHI19.2CR46.8%Revenue$18.9B
NAICS 238340Tile and terrazzo contractorsDetailed industry
HHI18.6CR46.4%Revenue$12.2B
NAICS 236115New single-family housing construction (except for-sale builders)Detailed industry
HHI14.5CR46.5%Revenue$117.8B
NAICS 238110Poured concrete foundation and structure contractorsDetailed industry
HHI12.8CR45.2%Revenue$78.7B
NAICS 238330Flooring contractorsDetailed industry
HHI12.4CR44.7%Revenue$24.2B
NAICS 238210Electrical contractors and other wiring installation contractorsDetailed industry
HHI11.6CR44.8%Revenue$249.2B
NAICS 237110Water and sewer line and related structures constructionDetailed industry
HHI11.1CR44.2%Revenue$56.9B
NAICS 238220Plumbing, heating, and air-conditioning contractorsDetailed industry
HHI9.3CR44.7%Revenue$297.6B
NAICS 238350Finish carpentry contractorsDetailed industry
HHI9.1CR44.4%Revenue$42.7B
NAICS 238140Masonry contractorsDetailed industry
HHI9CR44.1%Revenue$28.6B
NAICS 238910Site preparation contractorsDetailed industry
HHI3.8CR42.2%Revenue$158.7B
NAICS 238320Painting and wall covering contractorsDetailed industry
HHI2.9CR42.1%Revenue$33B

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