| Zip Code | City | Population ↓ |
|---|---|---|
| 94928 | Rohnert Park | 46,231 |
| 95403 | Santa Rosa | 44,677 |
| 95407 | Santa Rosa | 42,138 |
| 94954 | Petaluma | 38,201 |
| 95404 | Santa Rosa | 37,437 |
| 95401 | Santa Rosa | 36,905 |
| 95476 | Sonoma | 36,386 |
| 95472 | Sebastopol | 28,443 |
| 95492 | Windsor | 28,096 |
| 95409 | Santa Rosa | 26,158 |
| 95405 | Santa Rosa | 23,748 |
| 95448 | Healdsburg | 16,745 |
| 95425 | Cloverdale | 11,331 |
| 94931 | Cotati | 8,945 |
| 94515 | Calistoga | 7,024 |
| 95436 | Forestville | 6,008 |
| 95446 | Guerneville | 4,709 |
| 94951 | Penngrove | 3,574 |
| 95442 | Glen Ellen | 2,592 |
| 95441 | Geyserville | 1,819 |
| 95421 | Cazadero | 1,679 |
| 94923 | Bodega Bay | 1,390 |
| 95465 | Occidental | 1,251 |
| 95452 | Kenwood | 1,240 |
| 95497 | The Sea Ranch | 1,224 |
| 95462 | Monte Rio | 1,091 |
| 95439 | Fulton | 782 |
| 95471 | Rio Nido | 780 |
| 95444 | Graton | 516 |
| 94922 | Bodega | 509 |
| 95450 | Jenner | 272 |
| 95412 | Annapolis | 271 |
| 95419 | Camp Meeker | 169 |
| 94972 | Valley Ford | 153 |
| 95431 | Eldridge | 76 |
| 95486 | Villa Grande | 27 |
| 95480 | Stewarts Point | 6 |
| 95430 | Duncans Mills | 0 |
The data shown reflect ZCTAs from the US Census. As of 2024, there are 38 ZCTAs in Sonoma County, California (US Census).