Overview
San Mateo County is a county of California, United States (FIPS ca081), with a population of about 718,451[1].
Geography
- Coordinates: 37.4362, -122.3557
- Time zone: America/Los_Angeles
Places · place_us_ca_san_mateo_county
San Mateo County is a county of California, United States.
San Mateo County is a county of California, United States (FIPS ca081), with a population of about 718,451[1].