San Mateo County, California
CA · FIPS 06081 · ACS 2024 5-Year Estimates
| Metric | Value | vs National | Rank | Percentile |
|---|---|---|---|---|
| Total Population | 742,340 | — | #89 / 3,222 | |
| Median Household Income | $158,855 | +111.4% | #3 / 3,222 | |
| Median Age | 40.9 years | +5.1% | #1,820 / 3,222 | |
| Median Home Value | $1.6M | +453.2% | #3 / 3,222 | |
| Median Gross Rent | $2,922 | +151.2% | #1 / 3,222 | |
| Poverty Rate | 6.7% | -46.8% | #178 / 3,222 | |
Demographics
San Mateo County has a population of 742,340, making it the #89 most populous county in the US. The median age is 40.9 years, which is 5.1% above the national median.
Population Trend
Rankings →Year-over-Year Population Growth
Age & Sex Distribution
Race & Ethnicity
Nativity
Household Type
Economy
The median household income in San Mateo County is $158,855, ranking #3 out of 3,222 counties — 111.4% above the national median. The poverty rate is 6.7% and unemployment stands at 4.8%.
Median Household Income Trend
Rankings →Poverty Rate Trend
Rankings →Housing
The median home value in San Mateo County is $1.6M (+453.2% vs national). Renters pay a median of $2,922/mo and the homeownership rate is 58.5%.
Median Home Value Trend
Rankings →Health
96.2% of residents in San Mateo County have health insurance coverage, which is 4.9% above the national rate.
About San Mateo County, California
San Mateo County, California has a total population of 742,340, making it the 89th most populous county in the United States. The median age in San Mateo County is 40.9 years, which is 5.1% above the national median of 38.9 years.
The median household income in San Mateo County is $158,855, which ranks #3 of 3,222 counties nationwide. This is 111.4% above the national median of $75,149. The poverty rate is 6.7%, lower than the national rate of 12.6%. The unemployment rate stands at 4.8%.
The median home value in San Mateo County is $1.6M, 453.2% above the national median. Renters in San Mateo County pay a median gross rent of $2,922 per month. The homeownership rate is 58.5%, compared to the national rate of 64.4%.
In San Mateo County, 53.7% of residents aged 25 and older hold a bachelor's degree or higher, 59.3% above the national average of 33.7%. Health insurance coverage stands at 96.2% of the population. The average commute time for workers is 29.5 min.
San Mateo County is a diverse community. The largest racial or ethnic group is White (non-Hispanic) at 34.7% of the population, followed by Asian (non-Hispanic) (31.0%) and Hispanic or Latino (24.9%).
All data for San Mateo County, California comes from the U.S. Census Bureau's American Community Survey (ACS) 5-Year Estimates. These figures are estimates based on survey sampling and are subject to margin of error. For the most detailed and up-to-date data, visit the Census Bureau's official data portal.