Counties in California by business establishments (QCEW)
Los Angeles County had the highest business establishments (QCEW) of 58 counties in 2021, at 525,496. Alpine County had the lowest, at 84. The median was 7,253 and the figure for California was 1.66 million. Source: the U.S. Bureau of Labor Statistics.
Map of counties, 2021
- Under 1,000
- 1,000 to 3,000
- 3,000 to 7,000
- 7,000 to 14K
- 14K to 37K
- 37K and over
All counties, 2021
Full ranking
Other periods
About this ranking
Average number of establishments with jobs covered by unemployment insurance during the year, all industries, private and government, from the Quarterly Census of Employment and Wages (QCEW) of the U.S. Bureau of Labor Statistics. An establishment is a single place of business, such as a factory, store or office; a company with several locations has several.
Counts places of business, not firms: for firms use employer_firms. Changes in how large employers report their locations can move the count without any change in activity.
Every value in the ranking comes from the same publisher and the same period, so the counties are compared on one definition. Equal values share a rank.
How to cite
U.S. Bureau of Labor Statistics. Quarterly Census of Employment and Wages (QCEW): annual average establishments, total covered, all industries (NAICS 10), nation, states and counties. https://data.bls.gov/cew/data/api/2021/a/industry/10.csv. Retrieved 2026-10-12.Citation styles
APA 7
U.S. Bureau of Labor Statistics. (2026). Quarterly Census of Employment and Wages (QCEW): annual average establishments, total covered, all industries (NAICS 10), nation, states and counties (Counties in California by business establishments (QCEW), 2021) [Data set]. Retrieved October 12, 2026, from https://data.bls.gov/cew/data/api/2021/a/industry/10.csv
MLA 9
Quarterly Census of Employment and Wages (QCEW): annual average establishments, total covered, all industries (NAICS 10), nation, states and counties, Counties in California by business establishments (QCEW), 2021. U.S. Bureau of Labor Statistics, 21 Aug. 2026, https://data.bls.gov/cew/data/api/2021/a/industry/10.csv. Invokely, https://invokely.ai/rankings/business-establishments/california-counties?period=2021. Accessed 12 Oct. 2026.
Chicago (author-date)
U.S. Bureau of Labor Statistics. 2026. Quarterly Census of Employment and Wages (QCEW): annual average establishments, total covered, all industries (NAICS 10), nation, states and counties. Counties in California by business establishments (QCEW), 2021. Dataset. Accessed October 12, 2026. https://data.bls.gov/cew/data/api/2021/a/industry/10.csv. Also distributed by Invokely, https://invokely.ai/rankings/business-establishments/california-counties?period=2021.
Harvard
U.S. Bureau of Labor Statistics (2026) Quarterly Census of Employment and Wages (QCEW): annual average establishments, total covered, all industries (NAICS 10), nation, states and counties, Counties in California by business establishments (QCEW), 2021 [Dataset]. Available at: https://data.bls.gov/cew/data/api/2021/a/industry/10.csv, via Invokely: https://invokely.ai/rankings/business-establishments/california-counties?period=2021 (Accessed: 12 October 2026).
BibTeX
@misc{bureau_counties_in_california_by_2021,
author = {{U.S. Bureau of Labor Statistics}},
title = {{Quarterly Census of Employment and Wages (QCEW): annual average establishments, total covered, all industries (NAICS 10), nation, states and counties: Counties in California by business establishments (QCEW), 2021}},
year = {2026},
howpublished = {Data set},
url = {https://data.bls.gov/cew/data/api/2021/a/industry/10.csv},
urldate = {2026-10-12},
note = {Accessed via Invokely, https://invokely.ai/rankings/business-establishments/california-counties?period=2021. Publisher attribution: U.S. Bureau of Labor Statistics. Quarterly Census of Employment and Wages (QCEW): annual average establishments, total covered, all industries (NAICS 10), nation, states and counties. https://data.bls.gov/cew/data/api/2021/a/industry/10.csv. Retrieved 2026-10-12.},
}
RIS
TY - DATA
AU - U.S. Bureau of Labor Statistics
TI - Quarterly Census of Employment and Wages (QCEW): annual average establishments, total covered, all industries (NAICS 10), nation, states and counties: Counties in California by business establishments (QCEW), 2021
PY - 2026
DA - 2026/08/21
PB - U.S. Bureau of Labor Statistics
DB - Invokely
UR - https://data.bls.gov/cew/data/api/2021/a/industry/10.csv
L2 - https://invokely.ai/rankings/business-establishments/california-counties?period=2021
Y2 - 2026/10/12
N1 - Accessed via Invokely, https://invokely.ai/rankings/business-establishments/california-counties?period=2021.
N1 - Publisher attribution: U.S. Bureau of Labor Statistics. Quarterly Census of Employment and Wages (QCEW): annual average establishments, total covered, all industries (NAICS 10), nation, states and counties. https://data.bls.gov/cew/data/api/2021/a/industry/10.csv. Retrieved 2026-10-12.
ER -
Use this data in your AI agent
Invokely serves this figure to AI assistants through MCP and to code through a REST API, with the source and citation attached. Ask your assistant:
Rank Counties in California by business establishments (QCEW) using official data, and cite the source.
rank_places {"indicator":"establishments_qcew","level":"province","within":"California","limit":10}
GET https://invokely.ai/api/v1/rank?indicator=establishments_qcew&level=province&within=California&limit=10Questions
Which county has the highest business establishments (QCEW)?
Los Angeles County, with 525,496 in 2021, according to the U.S. Bureau of Labor Statistics.
Which county has the lowest business establishments (QCEW)?
Alpine County, with 84 in 2021.
Where does this ranking come from?
Every value comes from one source and one period, so the places are comparable: U.S. Bureau of Labor Statistics, Quarterly Census of Employment and Wages (QCEW): annual average establishments, total covered, all industries (NAICS 10), nation, states and counties. Retrieved 2026-10-12.