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 branchEducational servicesSector / level 2 of 6
Detailed descendants14Six-digit records in scope
Published HHI85.7%12 published / 2 withheld
Revenue$89.6BExact Census hierarchy row

Direct subsector records

Educational services / bars normalized to the largest visible revenue value

Selected classification

NAICS 61

Educational services

Sector with 14 detailed descendants.

Median HHI
75.6
Revenue
$89.6B
Employment
838.9K
Employer firms
83K

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 scopeEducational services14 detailed rows
Published HHI1285.7% of scope
Median HHI75.6Median CR4 15.0%
Revenue represented$89.6B2 HHI disclosure-withheld

Detailed-industry cross-section

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

2 withheld
NAICS 611620: Sports and recreation instruction; HHI 13; $11.6B revenue; 19,703 employer firmsNAICS 611610: Fine arts schools; HHI 2.2; $6.9B revenue; 15,977 employer firmsNAICS 611710: Educational support services; HHI 105.3; $21.8B revenue; 10,504 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 611699: All other miscellaneous schools and instruction; HHI 37.5; $4.9B revenue; 7,239 employer firmsNAICS 611519: Other technical and trade schools; HHI 83.8; $7B revenue; 3,590 employer firmsNAICS 611692: Automobile driving schools; HHI 121.1; $1.3B revenue; 2,396 employer firmsNAICS 611420: Computer training; HHI 177.4; $4.5B revenue; 1,859 employer firmsNAICS 611511: Cosmetology and barber schools; HHI 67.4; $2B revenue; 1,322 employer firmsNAICS 611513: Apprenticeship training; HHI 65.5; $2.2B revenue; 1,001 employer firmsNAICS 611630: Language schools; HHI 266.3; $1.3B revenue; 1,318 employer firms

Selected record

Language schools

NAICS 611630
HHI
266.3
Revenue
$1.3B
CR4
29.2%
Employer firms
1,318
Open industry profile

High-HHI tail

Highest measured rows

01Language schoolsNAICS 611630 / $1.3B266.302Exam preparation and tutoringNAICS 611691 / $7.3B186.603Computer trainingNAICS 611420 / $4.5B177.404Automobile driving schoolsNAICS 611692 / $1.3B121.105Educational support servicesNAICS 611710 / $21.8B105.306Other technical and trade schoolsNAICS 611519 / $7B83.8

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 scopeEducational services14 detailed rows
Area / Revenue$89.6BSales, shipments, or revenue
Color / HHI bands12 published2 HHI disclosure-withheld
Scope median HHI75.6Unweighted across published rows

Area = revenue / Color = hhi bands

1 sector groups / 14 positive-value industries

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

Active industry

Educational support servicesNAICS 611710

Revenue

$21.8B

24.30% of current scope / 24.3% of sector

HHI
105.3
CR4
16.8%
Employment
130,463
Employer firms
10,504
Open evidence profile

Largest by revenue

01Educational support services611710$21.8B02Professional and management development training611430$14.6B03Sports and recreation instruction611620$11.6B04Exam preparation and tutoring611691$7.3B

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.

14 of 1,866
NAICS 611630Language schoolsDetailed industry
HHI266.3CR429.2%Revenue$1.3B
NAICS 611691Exam preparation and tutoringDetailed industry
HHI186.6CR422.1%Revenue$7.3B
NAICS 611420Computer trainingDetailed industry
HHI177.4CR422.2%Revenue$4.5B
NAICS 611692Automobile driving schoolsDetailed industry
HHI121.1CR418.7%Revenue$1.3B
NAICS 611710Educational support servicesDetailed industry
HHI105.3CR416.8%Revenue$21.8B
NAICS 611519Other technical and trade schoolsDetailed industry
HHI83.8CR413.2%Revenue$7B
NAICS 611511Cosmetology and barber schoolsDetailed industry
HHI67.4CR413%Revenue$2B
NAICS 611513Apprenticeship trainingDetailed industry
HHI65.5CR410.4%Revenue$2.2B
NAICS 611699All other miscellaneous schools and instructionDetailed industry
HHI37.5CR410.2%Revenue$4.9B
NAICS 611430Professional and management development trainingDetailed industry
HHI35CR47.7%Revenue$14.6B
NAICS 611620Sports and recreation instructionDetailed industry
HHI13CR45.9%Revenue$11.6B
NAICS 611610Fine arts schoolsDetailed industry
HHI2.2CR41.7%Revenue$6.9B
NAICS 611410Business and secretarial schoolsDetailed industry
HHIWithheldCR467.2%Revenue$126.2M
NAICS 611512Flight trainingDetailed industry
HHIWithheldCR447.6%Revenue$4.1B

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