City · California · United States
South San Francisco, CA — ZIP codes
2 ZIP codes · San Mateo County
- City
- South San Francisco
- County
- San Mateo
- State
- California
- Country
- United States
- Postal codes
- 9408094083Single source
- Coordinates
- 37.6574, -122.4235 View on OpenStreetMap
- Area code
- 650 (from the nearest rate centre)
ZIP codes (2)
Sources and verification
US ZIP codes have five digits. They are postal routing areas, not administrative boundaries: a ZIP can span more than one city or county, and the city shown is the primary USPS name for that code.
GeoNames · U.S. Census Bureau (ACS). Last generated : 2026-08-21. Report an error.