San Mateo County, California
Population estimates, July 1, 2025, (V2025) 743,568
People
Population
Population estimates, July 1, 2025, (V2025) 743,568
Population estimates, July 1, 2024, (V2024) 742,893
Population estimates base, April 1, 2020, (V2025) 764,508
Population estimates base, April 1, 2020, (V2024) 764,659
Population, percent change - April 1, 2020 (estimates base) to July 1, 2025, (V2025) -2.7%
Population, percent change - April 1, 2020 (estimates base) to July 1, 2024, (V2024) -2.8%
Population, Census, April 1, 2020 764,442
Population, Census, April 1, 2010 718,451
Age and Sex
Persons under 5 years, percent 5.0%
Persons under 18 years, percent 18.9%
Persons 65 years and over, percent 18.8%
Female persons, percent 50.2%
Race and Hispanic Origin
White alone, percent 55.9%
Black alone, percent(a) 2.7%
American Indian and Alaska Native alone, percent(a) 1.1%
Asian alone, percent(a) 33.9%
Native Hawaiian and Other Pacific Islander alone, percent(a) 1.4%
Two or More Races, percent 5.0%
Hispanic or Latino, percent(b) 25.0%
White alone, not Hispanic or Latino, percent 34.6%
Population Characteristics
Veterans, 2020-2024 17,374
Foreign-born persons, percent, 2020-2024 35.7%
Housing
Housing Units, July 1, 2025, (V2025) 292,930
Owner-occupied housing unit rate, 2020-2024 58.5%
Median value of owner-occupied housing units, 2020-2024 $1,559,600
Median selected monthly owner costs - with a mortgage, 2020-2024 $4,000+
Median selected monthly owner costs - without a mortage, 2020-2024 $1,113
Median gross rent, 2020-2024 $2,922
Building Permits, 2025 2,216
Families & Living Arrangements
Households, 2020-2024 264,419
Persons per household, 2020-2024 2.76
Living in the same house 1 year ago, percent of persons age 1 year+ , 2020-2024 88.4%
Language other than English spoken at home, percent of persons age 5 years+, 2020-2024 45.8%
Computer and Internet Use
Households with a computer, percent, 2020-2024 97.7%
Households with a broadband Internet subscription, percent, 2020-2024 95.7%
Education
High school graduate or higher, percent of persons age 25 years+, 2020-2024 90.2%
Bachelor's degree or higher, percent of persons age 25 years+, 2020-2024 53.7%
Health
With a disability, under age 65 years, percent, 2020-2024 5.3%
Persons without health insurance, under age 65 years, percent 4.9%
Economy
In civilian labor force, total, percent of population age 16 years+, 2020-2024 67.2%
In civilian labor force, female, percent of population age 16 years+, 2020-2024 62.5%
Total accommodation and food services sales, 2022 ($1,000)(c) 4,028,073
Total health care and social assistance receipts/revenue, 2022 ($1,000)(c) 9,461,139
Total transportation and warehousing receipts/revenue, 2022 ($1,000)(c) 12,453,938
Total retail sales, 2022 ($1,000)(c) 17,671,976
Total retail sales per capita, 2022(c) $24,244
Transportation
Mean travel time to work (minutes), workers age 16 years+, 2020-2024 26.4
Income & Poverty
Median households income (in 2024 dollars), 2020-2024 $158,855
Per capita income in past 12 months (in 2024 dollars), 2020-2024 $84,288
Persons in poverty, percent 7.2%
Businesses
Businesses
Total employer establishments, 2023 21,569
Total employment, 2023 477,938
Total annual payroll, 2023 ($1,000) 87,650,568
Total employment, percent change, 2022-2023 2.9%
Total nonemployer establishments, 2023 68,937
All employer firms, Reference year 2023 16,650
Male-owned employer firms, Reference year 2023 9,305
Female-owned employer firms, Reference year 2023 3,734
Minority-owned employer firms, Reference year 2023 6,570
Nonminority-owned employer firms, Reference year 2023 8,202
Veteran-owned employer firms, Reference year 2023 246
Nonveteran-owned employer firms, Reference year 2023 14,749
Geography
Geography
Population per square mile, 2020 1,704.0
Population per square mile, 2010 1,602.2
Land area in square miles, 2020 448.62
Land area in square miles, 2010 448.41
FIPS Code 06081