Business establishments (QCEW) in San Mateo County

Business establishments (QCEW) in San Mateo County was 31,709 in 2025, according to the U.S. Bureau of Labor Statistics. That is up 1.7% from 2024. That is the 13th highest of 58 counties in 2025.

2025, count31,709

Change on 2024+1.7%

Rank13th of 58Counties in California ranked

Series high31,7092025

Series low22,2172005

Next release: Saturday, 21 August 2027, estimated by Invokely from past publication dates (low confidence), not announced by the publisher. Release calendar

Business establishments (QCEW) in San Mateo County, 2001 to 2025

count. Source: BLS, Quarterly Census of Employment and Wages (QCEW): annual average establishments, total covered, all industries (NAICS 10), nation, states and counties. Retrieved 2026-10-12, published 2026-08-21.

All 25 values

Period	count
2025	31,709
2024	31,186
2023	30,203
2022	29,715
2021	29,183
2020	28,970
2019	28,826
2018	28,333
2017	27,835
2016	27,224
2015	26,654
2014	25,670
2013	24,601
2012	24,242
2011	24,240
2010	23,586
2009	23,623
2008	23,815
2007	22,849
2006	23,045
2005	22,217
2004	22,669
2003	22,721
2002	23,003
2001	22,892

Compared with California and United States

Place	2025
San Mateo County	31,709
California	1,877,156
United States	12,112,924

San Mateo County compared with nearby places

Under 1,000
1,000 to 4,000
4,000 to 8,000
8,000 to 16K
16K to 43K
43K and over

Business establishments (QCEW), 2025, count. San Mateo County is outlined. Same source and period for every area shown. Source: U.S. Bureau of Labor Statistics. Boundaries: U.S. Census Bureau cartographic boundary files.

Rankings

US states by business establishments (QCEW) 51 places
Counties in California by business establishments (QCEW) 58 places

Definition

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.

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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/2025/a/industry/10.csv. Retrieved 2026-10-12.

Citation styles

The publisher is the author. Invokely is named only as the place the figures were read, where a style asks for it.

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 (Business establishments (QCEW), San Mateo County, 2001 to 2025) [Data set]. Retrieved October 12, 2026, from https://data.bls.gov/cew/data/api/2025/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, Business establishments (QCEW), San Mateo County, 2001 to 2025. U.S. Bureau of Labor Statistics, 21 Aug. 2026, https://data.bls.gov/cew/data/api/2025/a/industry/10.csv. Invokely, https://invokely.ai/en/business-establishments/san-mateo-county-california. 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. Business establishments (QCEW), San Mateo County, 2001 to 2025. Dataset. Accessed October 12, 2026. https://data.bls.gov/cew/data/api/2025/a/industry/10.csv. Also distributed by Invokely, https://invokely.ai/en/business-establishments/san-mateo-county-california.

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, Business establishments (QCEW), San Mateo County, 2001 to 2025 [Dataset]. Available at: https://data.bls.gov/cew/data/api/2025/a/industry/10.csv, via Invokely: https://invokely.ai/en/business-establishments/san-mateo-county-california (Accessed: 12 October 2026).

BibTeX

@misc{bureau_business_establishments_qcew_san_2025,
  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: Business establishments (QCEW), San Mateo County, 2001 to 2025}},
  year = {2026},
  howpublished = {Data set},
  url = {https://data.bls.gov/cew/data/api/2025/a/industry/10.csv},
  urldate = {2026-10-12},
  note = {Accessed via Invokely, https://invokely.ai/en/business-establishments/san-mateo-county-california. 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/2025/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: Business establishments (QCEW), San Mateo County, 2001 to 2025
PY  - 2026
DA  - 2026/08/21
PB  - U.S. Bureau of Labor Statistics
DB  - Invokely
UR  - https://data.bls.gov/cew/data/api/2025/a/industry/10.csv
L2  - https://invokely.ai/en/business-establishments/san-mateo-county-california
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/en/business-establishments/san-mateo-county-california.
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/2025/a/industry/10.csv. Retrieved 2026-10-12.
ER  -

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Questions

What is the business establishments (QCEW) in San Mateo County?

Business establishments (QCEW) in San Mateo County was 31,709 in 2025, according to the U.S. Bureau of Labor Statistics. That is up 1.7% from 2024. That is the 13th highest of 58 counties in 2025.

Where does this figure come from?

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 by Invokely on 2026-10-12.

What was the highest business establishments (QCEW) in San Mateo County?

31,709 in 2025, the highest value since 2001 in this series.

Related statistics for San Mateo County

All statistics for San Mateo County | San Mateo County in figures