Employer firm births in San Mateo County

Employer firm births in San Mateo County was 1,313 in 2023, according to the U.S. Census Bureau. That is up 1.7% from 2022. That is the 13th highest of 58 counties in 2023.

2023, count1,313

Change on 2022+1.7%

Rank13th of 58Counties in California ranked

Series high1,5451986

Series low1,0862009

Employer firm births in San Mateo County, 1978 to 2023

count. Source: U.S. Census Bureau, Business Dynamics Statistics by firm age: employer firms of age zero, all covered industries, nation, states and counties from 1978. Retrieved 2026-10-22, published 2025-09-25.

All 46 values

Period	count
2023	1,313
2022	1,291
2021	1,228
2020	1,316
2019	1,315
2018	1,213
2017	1,323
2016	1,389
2015	1,373
2014	1,295
2013	1,229
2012	1,286
2011	1,177
2010	1,089
2009	1,086
2008	1,262
2007	1,303
2006	1,403
2005	1,336
2004	1,239
2003	1,171
2002	1,205
2001	1,304
2000	1,419
1999	1,315
1998	1,368
1997	1,428
1996	1,462
1995	1,417
1994	1,372
1993	1,252
1992	1,220
1991	1,376
1990	1,501
1989	1,519
1988	1,446
1987	1,540
1986	1,545
1985	1,498
1984	1,518
1983	1,360
1982	1,280
1981	1,336
1980	1,376
1979	1,497
1978	1,508

Compared with California and United States

Place	2023
San Mateo County	1,313
California	70,055
United States	508,777

San Mateo County compared with nearby places

Under 100
100 to 200
200 to 600
600 to 1,500
1,500 and over

Employer firm births, 2023, count. San Mateo County is outlined. Same source and period for every area shown. Source: U.S. Census Bureau. Boundaries: U.S. Census Bureau cartographic boundary files.

Rankings

US states by employer firm births 51 places
Counties in California by employer firm births 58 places

Definition

New employer firms: firms of age zero in March of the year, meaning that every establishment of the firm had its first employees during the previous twelve months. United States: Census Bureau Business Dynamics Statistics, which calls these firms startups.

A firm counts only when it has employees, so a business without staff is not a birth, and a new branch, merger or change of ownership of an existing firm is not a birth either. Not the same as business_applications (requests for an employer number) or enterprise_births (European business demography). The year is the twelve months to March: 2023 compares March 2022 with March 2023.

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How to cite

U.S. Census Bureau. Business Dynamics Statistics by firm age: employer firms of age zero, all covered industries, nation, states and counties from 1978. https://www2.census.gov/programs-surveys/bds/tables/time-series/2023/bds2023_st_cty_fac.csv. Retrieved 2026-10-22.

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 by firm age: employer firms of age zero, all covered industries, nation, states and counties from 1978 (Employer firm births, San Mateo County, 1978 to 2023) [Data set]. Retrieved October 22, 2026, from https://www2.census.gov/programs-surveys/bds/tables/time-series/2023/bds2023_st_cty_fac.csv

MLA 9

Business Dynamics Statistics by firm age: employer firms of age zero, all covered industries, nation, states and counties from 1978, Employer firm births, 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_fac.csv. Invokely, https://invokely.ai/en/employer-firm-births/san-mateo-county-california. Accessed 22 Oct. 2026.

Chicago (author-date)

U.S. Census Bureau. 2025. Business Dynamics Statistics by firm age: employer firms of age zero, all covered industries, nation, states and counties from 1978. Employer firm births, San Mateo County, 1978 to 2023. Dataset. Accessed October 22, 2026. https://www2.census.gov/programs-surveys/bds/tables/time-series/2023/bds2023_st_cty_fac.csv. Also distributed by Invokely, https://invokely.ai/en/employer-firm-births/san-mateo-county-california.

Harvard

U.S. Census Bureau (2025) Business Dynamics Statistics by firm age: employer firms of age zero, all covered industries, nation, states and counties from 1978, Employer firm births, San Mateo County, 1978 to 2023 [Dataset]. Available at: https://www2.census.gov/programs-surveys/bds/tables/time-series/2023/bds2023_st_cty_fac.csv, via Invokely: https://invokely.ai/en/employer-firm-births/san-mateo-county-california (Accessed: 22 October 2026).

BibTeX

@misc{census_employer_firm_births_san_2023,
  author = {{U.S. Census Bureau}},
  title = {{Business Dynamics Statistics by firm age: employer firms of age zero, all covered industries, nation, states and counties from 1978: Employer firm births, 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_fac.csv},
  urldate = {2026-10-22},
  note = {Accessed via Invokely, https://invokely.ai/en/employer-firm-births/san-mateo-county-california. Publisher attribution: U.S. Census Bureau. Business Dynamics Statistics by firm age: employer firms of age zero, all covered industries, nation, states and counties from 1978. https://www2.census.gov/programs-surveys/bds/tables/time-series/2023/bds2023\_st\_cty\_fac.csv. Retrieved 2026-10-22.},
}

RIS

TY  - DATA
AU  - U.S. Census Bureau
TI  - Business Dynamics Statistics by firm age: employer firms of age zero, all covered industries, nation, states and counties from 1978: Employer firm births, 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_fac.csv
L2  - https://invokely.ai/en/employer-firm-births/san-mateo-county-california
Y2  - 2026/10/22
N1  - Accessed via Invokely, https://invokely.ai/en/employer-firm-births/san-mateo-county-california.
N1  - Publisher attribution: U.S. Census Bureau. Business Dynamics Statistics by firm age: employer firms of age zero, all covered industries, nation, states and counties from 1978. https://www2.census.gov/programs-surveys/bds/tables/time-series/2023/bds2023_st_cty_fac.csv. Retrieved 2026-10-22.
ER  -

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Questions

What is the employer firm births in San Mateo County?

Employer firm births in San Mateo County was 1,313 in 2023, according to the U.S. Census Bureau. That is up 1.7% from 2022. That is the 13th highest of 58 counties in 2023.

Where does this figure come from?

U.S. Census Bureau. Business Dynamics Statistics by firm age: employer firms of age zero, all covered industries, nation, states and counties from 1978. Retrieved by Invokely on 2026-10-22.

What was the highest employer firm births in San Mateo County?

1,545 in 1986, 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