Marin County ZIP Codes
Marin County is a county of California.
- ZIP codes
- 41
- Cities & towns
- 26
- Area codes
- 6
- Land area
- 520 sq mi
Every ZIP code in Marin County
| ZIP code | City |
|---|---|
| 94901 | San Rafael |
| 94903 | San Rafael |
| 94904 | Greenbrae |
| 94912 | San Rafael |
| 94913 | San Rafael |
| 94914 | Kentfield |
| 94915 | San Rafael |
| 94920 | Belvedere Tiburon |
| 94924 | Bolinas |
| 94925 | Corte Madera |
| 94929 | Dillon Beach |
| 94930 | Fairfax |
| 94933 | Forest Knolls |
| 94937 | Inverness |
| 94938 | Lagunitas |
| 94939 | Larkspur |
| 94940 | Marshall |
| 94941 | Mill Valley |
| 94942 | Mill Valley |
| 94945 | Novato |
| 94946 | Nicasio |
| 94947 | Novato |
| 94948 | Novato |
| 94949 | Novato |
| 94950 | Olema |
| 94956 | Point Reyes Station |
| 94957 | Ross |
| 94960 | San Anselmo |
| 94963 | San Geronimo |
| 94964 | San Quentin |
| 94965 | Sausalito |
| 94966 | Sausalito |
| 94970 | Stinson Beach |
| 94971 | Tomales |
| 94973 | Woodacre |
| 94974 | San Quentin |
| 94976 | Corte Madera |
| 94977 | Larkspur |
| 94978 | Fairfax |
| 94979 | San Anselmo |
| 94998 | Novato |
We do not publish a delivery type (standard, PO box, unique) or a neighbourhood for each ZIP. USPS delivery-type products are licensed, and no clean-rights source maps ZIP codes to neighbourhoods — so the Marin County codes above are listed without a column we would have to invent.
Cities and towns in Marin County
A further 17 places in Marin County appear in the postal source without a page of its own; their codes are in the table above and each one links to its own page.
Area codes covering Marin County
Telephone and postal boundaries are drawn by different bodies, so these codes overlap the county without matching its edges.
- 341 Area code 341
- 369 Area code 369
- 415 Area code 415
- 510 Area code 510
- 628 Area code 628
- 707 Area code 707
Where Marin County's ZIP codes sit
- Reference points and footprint
- Not an official NANPA boundary
- Not a USPS delivery area
Scope every ZIP code recorded in Marin County. Source GeoNames US postal codes (2026-07 postal dump), Census 2024 county Gazetteer (2024 Gazetteer) and geoinfo-dataset (full_dataset) ZIP→NPA (2018 snapshot). Updated . The outline is a convex envelope of ZIP reference points, not a jurisdiction boundary.