Public dataset
2022 Economic Census Concentration of Largest Firms
U.S. Census Bureau
- Rows
- 679
- Years
- 2022
- Accessed
- Jul 17, 2026
Canonical indicator / industry-hhi
Detailed industry HHI
Published HHI for six-digit 2022 NAICS industries in the Economic Census.
Census industriesHHI (0-10,000)Calendar or release year2022
Snapshot median
284Middle of 679 bounded observations- Observations
- 679
- 679 bounded entities
- Coverage
- 2022
- 1 observed period
- Sources
- 1
- U.S. Census Bureau
- Exact pair
- r 0.945
- 679 entity-period matches
Indicator dossierIndustry HHI679 observations / 2022
01 / Measurement contract
Definition before comparison
The unit, universe, period, and source boundary travel with every observation.
What this series measures
Published HHI for six-digit 2022 NAICS industries in the Economic Census.
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.
- Indicator ID
- industry-hhi
- Unit
- HHI (0-10,000)
- Observation dimension
- NAICS industry
- Grouping field
- NAICS sector
- Period basis
- Calendar or release year
- Ranking contract
- Use the latest available row for each entity
02 / Observed variation
Entity distribution and ranked anchors
2022; absent and withheld values do not enter the distribution.
- Minimum
- 0.1
- 25th percentile
- 94.8
- Median
- 284
- 75th percentile
- 609.5
- Maximum
- 3,436.1
Selected interval0.1 to 343.7380 observations / 56.0% of the snapshot
Ranked reference rowsHHI (0-10,000)
- 01Deep sea passenger transportation483112 / 20223,436.1
- 02Guided missile and space vehicle manufacturing336414 / 20223,377.1
- 03Wireless telecommunications carriers (except satellite)517112 / 20223,074.2
- 04Monetary authorities - central bank521110 / 20223,074
- 05Passenger car rental532111 / 20223,029.2
- 06Armored car services561613 / 20222,721
- 07Breakfast cereal manufacturing311230 / 20222,539.1
- 08HMO medical centers621491 / 20222,449.2
- 678Mobile food services722330 / 20221.8
- 679Nail salons812113 / 20220.1
03 / Coverage and quality
Where the series has evidence
Observed rows are counted explicitly by period, group, verification status, and confidence level.
Period ledger1 observed period
2022679 entities6791 source
Evidence stateAll indicator observations
Data status
100.0%Verified / 679Confidence
100.0%High / 679NAICS sectorLatest bounded snapshot, largest groups first
| Group | Rows | Average | Range |
|---|---|---|---|
| 31 | 271 | 585.9 | 3.5 to 3,377.1 |
| 42 | 55 | 408.7 | 34.7 to 1,182.9 |
| 54 | 39 | 150.6 | 4.7 to 601.6 |
| 48 | 38 | 539.1 | 2.4 to 3,436.1 |
| 44 | 31 | 394.3 | 10.6 to 2,386.8 |
| 56 | 30 | 354.7 | 7.4 to 2,721 |
| 62 | 30 | 164.7 | 5.5 to 2,449.2 |
| 81 | 30 | 105.5 | 0.1 to 447.9 |
| 52 | 27 | 748.3 | 59.5 to 3,074 |
| 23 | 26 | 51.1 | 1.9 to 248.9 |
| 71 | 19 | 391.8 | 3.3 to 2,416.3 |
| 51 | 17 | 798.4 | 184.2 to 3,074.2 |
| 21 | 17 | 613.9 | 90 to 1,888.9 |
| 53 | 17 | 423.7 | 24.1 to 3,029.2 |
Showing 14 of 17 groups. The exact packet retains every observation and group label.
04 / Exact paired lens
Detailed industry HHI and CR4
Published HHI and four-firm share for the same six-digit 2022 NAICS industry.
Same entity + same period0.945Pearson correlation across 679 exact pairs
-1 inverse 0 +1 aligned
- Pairing rule
- Same six-digit NAICS industry and Economic Census year
- Companion indicator
- Industry CR4
- Matched current-series rows
- 679 / 679 (100.0%)
- Unpaired current-series rows
- 0; excluded from correlation
Interpretation boundaryA 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. The relationship is descriptive and does not make a statistical industry equivalent to a legal antitrust market.
05 / Source custody
Evidence behind the series
1 source family, 1 contextual reference, and 1 encoded methodology note.
Contextual reference register
Interpretive context, kept outside source custody.
Research literature2019
Are US Industries Becoming More Concentrated?
Review of Finance
- Why linked
- The peer-reviewed article studies changes in U.S. industry concentration since the late 1990s. It motivates longitudinal scrutiny of industry structure but supplies none of this indicator's 2022 Economic Census rows.
- Boundary
- The paper's firm universe, measures, time window, and research design differ from the current Census industry-HHI contract. Its results are not joined to, pooled with, or used to validate these observations.
Reusable indicator packetExact rows, stable identifier, and explicit route contract
- Canonical URL
- /indicators/industry-hhi
- Indicator filter
- indicator=industry-hhi
- License
- Antitrust Radar compilation: CC BY 4.0; upstream terms remain in force
Method notes encoded on rowsNo inferred methodology is substituted
- 01
Published 2022 Economic Census HHI for a six-digit NAICS statistical industry.
Indicator evidence guardrail
One measure, one contract
This profile documents one bounded indicator at a time. Its ranks, distributions, histories, and paired views remain inside the stated universe, period basis, source, unit, and methodology; they are descriptive research screens, not legal findings or components of a composite score.
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.