City · California · United States
Marshall, CA — ZIP codes
1 ZIP code · Marin County
- City
- Marshall
- County
- Marin
- State
- California
- Country
- United States
- Postal code
- 94940Single source
- Coordinates
- 38.1762, -122.8900 View on OpenStreetMap
- Area codes
- 909, 840
ZIP codes (1)
| Postal code | Place name | Verification |
|---|---|---|
| 94940 | Marshall | Single source |
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) · U.S. Census Bureau · NOAA NCEI · usda-phzm. Last generated : 2026-08-21. Report an error.