29 zips
| Zip Code | City | Population ↓ |
|---|---|---|
| 94901 | San Rafael | 41,095 |
| 94952 | Petaluma | 33,339 |
| 94941 | Mill Valley | 32,349 |
| 94903 | San Rafael | 31,135 |
| 94947 | Novato | 24,360 |
| 94949 | Novato | 18,357 |
| 94945 | Novato | 17,280 |
| 94960 | San Anselmo | 15,891 |
| 94904 | Greenbrae | 13,043 |
| 94920 | Belvedere Tiburon | 12,682 |
| 94965 | Sausalito | 12,160 |
| 94925 | Corte Madera | 10,101 |
| 94930 | Fairfax | 8,564 |
| 94939 | Larkspur | 7,372 |
| 94957 | Ross | 2,151 |
| 94964 | San Quentin | 2,115 |
| 94973 | Woodacre | 1,652 |
| 94933 | Forest Knolls | 1,255 |
| 94924 | Bolinas | 1,217 |
| 94956 | Point Reyes Station | 1,158 |
| 94937 | Inverness | 916 |
| 94946 | Nicasio | 727 |
| 94963 | San Geronimo | 562 |
| 94938 | Lagunitas | 540 |
| 94970 | Stinson Beach | 372 |
| 94971 | Tomales | 315 |
| 94940 | Marshall | 275 |
| 94929 | Dillon Beach | 224 |
| 94950 | Olema | 29 |
The data shown reflect ZCTAs from the US Census. As of 2024, there are 29 ZCTAs in Marin County, California (US Census).