ZIP code · San Quentin · California · United States
ZIP code 94964 — San Quentin
ZIP code 94964 serves San Quentin, California.
- Postal code
- 94964Single source Value from one source, not cross-checked.
- City
- San Quentin
- County
- Marin
- State
- California
- Country
- United States
- Coordinates
- 37.9416, -122.4844 — precision precise (locality)
View on OpenStreetMap - Population
- 2,115 (ZCTA, ACS 5-year)
- Median age
- 48
- Time zone
- America/Los_Angeles (UTC−8 / UTC−7 DST)
About this page
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). Data generated on 2026-08-21. Methodology · Report an error on this page