County · California · United States
San Mateo County ZIP codes
31 ZIP codes · 24 cities · FIPS 06081
Key facts
- State
- California (CA)
- FIPS code
- 06081
- Population
- 745,100
- Median household income
- $156,000
- Median age
- 40.6
- Land area
- 448.6 sq mi (1,161.9 km²)
- Population density
- 1,661 / sq mi
- Area codes
- 415, 530, 559, 628, 650
Cities and ZIP codes in San Mateo County (24)
About this page
County figures are Census county-level values (ACS 5-year); the ZIP list shows the ZIPs whose primary county this is — a ZIP on a border can also serve neighbouring counties.
Sources: U.S. Census Bureau (2020 county relationship file, ACS 5-year) · GeoNames. Methodology.