Statistics for San Mateo County
Latest official figures for San Mateo County, each linked to its source.
Demography
| Population | 743,568 persons | 2025 |
| Median age | 40.9 years | 2024 |
| Live births, July to June | 7,131 count | 2025 |
| Deaths, July to June | 4,852 count | 2025 |
| Crude birth rate, July to June | 9.61 per 1,000 inhabitants | 2025 |
| Crude death rate, July to June | 6.54 per 1,000 inhabitants | 2025 |
Labor market
| Unemployment rate | 4 % | 2026-08 |
Income and living conditions
| Poverty rate (US official measure) | 7.2 % | 2024 |
| Median household income | 158,855 USD | 2024 |
Economy
| Gross domestic product (GDP), US dollars | 217,017.8 USD million | 2024 |
| Real GDP growth | 9.7 % | 2024 |