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 FIPS 06041
- State
- California
- Country
- United States
- Coordinates
- 37.9416, -122.4844 — precision precise (locality)
View on OpenStreetMap - Population
- 2,115 (ZCTA, ACS 5-year)
- Population density
- 4,642 / sq mi
- Land area
- 0.5 sq mi (1.2 km²) (ZCTA, ACS 5-year)
- Per-capita income
- $10,794
- Median age
- 48
- Households
- 110
- Housing units
- 147
- Congressional district
- CA-2 (119th Congress)
- USDA hardiness zone
- 10a (30 to 35 °F)Planting / growing zone from the 2023 USDA Plant Hardiness Zone Map: average annual extreme minimum temperature, 1991–2020.
- Time zone
- America/Los_Angeles (UTC−8 / UTC−7 DST)
Tools: compare 94964 with another ZIP · ZIPs within 25 miles · distance from 94964
Map of ZIP code 94964
Climate — monthly normals
Warmest month Aug (avg high 83°F), coldest Dec (avg low 42°F).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 57 | 61 | 65 | 69 | 74 | 80 | 83 | 83 | 82 | 76 | 64 | 56 |
| Avg low °F | 42 | 43 | 44 | 46 | 50 | 52 | 53 | 54 | 53 | 50 | 45 | 42 |
| Precip in | 8.8 | 8.7 | 6.0 | 2.6 | 1.4 | 0.4 | 0.0 | 0.1 | 0.1 | 2.0 | 4.6 | 9.8 |
NOAA 1991–2020 climate normals from the nearest station: KENTFIELD (3.4 mi) · NOAA NCEI
Places in ZIP 94964
- 1 post offices
Places mapped inside this ZIP’s ZCTA area in OpenStreetMap. OSM is community-maintained: counts reflect what has been mapped, and completeness varies by area — treat them as at-least figures. © OpenStreetMap contributors (ODbL) · Methodology
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) · U.S. Census Bureau · NOAA NCEI · usda-phzm. Data generated on 2026-08-21. Methodology · Report an error on this page