Data / Employer firms / San Mateo County

Employer firms in San Mateo County

Employer firms in San Mateo County was 16,766 in 2023, according to the U.S. Census Bureau. That is up 0.5% from 2022. That is the 12th highest of 58 counties in 2023.

2023, count16,766
Change on 2022+0.5%
Rank12th of 58Counties in California ranked
Series high16,7662023
Series low11,4481978

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Employer firms in San Mateo County, 1978 to 2023

10K12K14K16K18K19781985199219992006201320231978: 11,448 count1979: 11,987 count1980: 12,263 count1981: 12,487 count1982: 12,490 count1983: 12,736 count1984: 13,299 count1985: 13,520 count1986: 13,877 count1987: 14,088 count1988: 14,420 count1989: 14,556 count1990: 14,849 count1991: 14,771 count1992: 14,667 count1993: 14,536 count1994: 14,695 count1995: 14,822 count1996: 15,058 count1997: 15,236 count1998: 15,555 count1999: 15,697 count2000: 15,898 count2001: 15,771 count2002: 15,449 count2003: 15,224 count2004: 15,157 count2005: 15,337 count2006: 15,683 count2007: 15,816 count2008: 15,685 count2009: 15,416 count2010: 15,220 count2011: 15,353 count2012: 15,608 count2013: 15,712 count2014: 15,995 count2015: 16,250 count2016: 16,433 count2017: 16,451 count2018: 16,456 count2019: 16,599 count2020: 16,627 count2021: 16,311 count2022: 16,679 count2023: 16,766 count
count. Source: U.S. Census Bureau, Business Dynamics Statistics: employer firms, all covered industries, nation, states and counties. Retrieved 2026-10-11, published 2025-09-25.
All 46 values
Periodcount
202316,766
202216,679
202116,311
202016,627
201916,599
201816,456
201716,451
201616,433
201516,250
201415,995
201315,712
201215,608
201115,353
201015,220
200915,416
200815,685
200715,816
200615,683
200515,337
200415,157
200315,224
200215,449
200115,771
200015,898
199915,697
199815,555
199715,236
199615,058
199514,822
199414,695
199314,536
199214,667
199114,771
199014,849
198914,556
198814,420
198714,088
198613,877
198513,520
198413,299
198312,736
198212,490
198112,487
198012,263
197911,987
197811,448

Compared with California and United States

Place2023
San Mateo County16,766
California725,847
United States5,593,727

Rankings

Definition

Number of firms in the private nonfarm sectors covered by the US Census Bureau Business Dynamics Statistics. Establishments under common ownership form one firm.

Excludes nonemployer businesses. Differs from active_companies, the INE DIRCE count, which includes businesses without employees.

How to cite

U.S. Census Bureau. Business Dynamics Statistics: employer firms, all covered industries, nation, states and counties. https://www2.census.gov/programs-surveys/bds/tables/time-series/2023/bds2023_st_cty.csv. Retrieved 2026-10-11.

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. Census Bureau. (2025). Business Dynamics Statistics: employer firms, all covered industries, nation, states and counties (Employer firms, San Mateo County, 1978 to 2023) [Data set]. Retrieved October 11, 2026, from https://www2.census.gov/programs-surveys/bds/tables/time-series/2023/bds2023_st_cty.csv

MLA 9

Business Dynamics Statistics: employer firms, all covered industries, nation, states and counties, Employer firms, San Mateo County, 1978 to 2023. U.S. Census Bureau, 25 Sept. 2025, https://www2.census.gov/programs-surveys/bds/tables/time-series/2023/bds2023_st_cty.csv. Invokely, https://invokely.ai/en/employer-firms/san-mateo-county-california. Accessed 11 Oct. 2026.

Chicago (author-date)

U.S. Census Bureau. 2025. Business Dynamics Statistics: employer firms, all covered industries, nation, states and counties. Employer firms, San Mateo County, 1978 to 2023. Dataset. Accessed October 11, 2026. https://www2.census.gov/programs-surveys/bds/tables/time-series/2023/bds2023_st_cty.csv. Also distributed by Invokely, https://invokely.ai/en/employer-firms/san-mateo-county-california.

Harvard

U.S. Census Bureau (2025) Business Dynamics Statistics: employer firms, all covered industries, nation, states and counties, Employer firms, San Mateo County, 1978 to 2023 [Dataset]. Available at: https://www2.census.gov/programs-surveys/bds/tables/time-series/2023/bds2023_st_cty.csv, via Invokely: https://invokely.ai/en/employer-firms/san-mateo-county-california (Accessed: 11 October 2026).

BibTeX
@misc{census_employer_firms_san_mateo_2023,
  author = {{U.S. Census Bureau}},
  title = {{Business Dynamics Statistics: employer firms, all covered industries, nation, states and counties: Employer firms, San Mateo County, 1978 to 2023}},
  year = {2025},
  howpublished = {Data set},
  url = {https://www2.census.gov/programs-surveys/bds/tables/time-series/2023/bds2023_st_cty.csv},
  urldate = {2026-10-11},
  note = {Accessed via Invokely, https://invokely.ai/en/employer-firms/san-mateo-county-california. Publisher attribution: U.S. Census Bureau. Business Dynamics Statistics: employer firms, all covered industries, nation, states and counties. https://www2.census.gov/programs-surveys/bds/tables/time-series/2023/bds2023\_st\_cty.csv. Retrieved 2026-10-11.},
}
RIS
TY  - DATA
AU  - U.S. Census Bureau
TI  - Business Dynamics Statistics: employer firms, all covered industries, nation, states and counties: Employer firms, San Mateo County, 1978 to 2023
PY  - 2025
DA  - 2025/09/25
PB  - U.S. Census Bureau
DB  - Invokely
UR  - https://www2.census.gov/programs-surveys/bds/tables/time-series/2023/bds2023_st_cty.csv
L2  - https://invokely.ai/en/employer-firms/san-mateo-county-california
Y2  - 2026/10/11
N1  - Accessed via Invokely, https://invokely.ai/en/employer-firms/san-mateo-county-california.
N1  - Publisher attribution: U.S. Census Bureau. Business Dynamics Statistics: employer firms, all covered industries, nation, states and counties. https://www2.census.gov/programs-surveys/bds/tables/time-series/2023/bds2023_st_cty.csv. Retrieved 2026-10-11.
ER  -
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Questions

What is the employer firms in San Mateo County?

Employer firms in San Mateo County was 16,766 in 2023, according to the U.S. Census Bureau. That is up 0.5% from 2022. That is the 12th highest of 58 counties in 2023.

Where does this figure come from?

U.S. Census Bureau. Business Dynamics Statistics: employer firms, all covered industries, nation, states and counties. Retrieved by Invokely on 2026-10-11.

What was the highest employer firms in San Mateo County?

16,766 in 2023, the highest value since 1978 in this series.

Related statistics for San Mateo County

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