38 ZIP Codes
| Zip Code | City | Population ↓ |
|---|---|---|
| 94928 | Rohnert Park | 46,829 |
| 95403 | Santa Rosa | 45,806 |
| 95407 | Santa Rosa | 42,036 |
| 94954 | Petaluma | 37,574 |
| 95404 | Santa Rosa | 37,011 |
| 95401 | Santa Rosa | 36,861 |
| 95476 | Sonoma | 35,196 |
| 95472 | Sebastopol | 28,747 |
| 95492 | Windsor | 27,429 |
| 95409 | Santa Rosa | 25,616 |
| 95405 | Santa Rosa | 22,744 |
| 95448 | Healdsburg | 16,077 |
| 95425 | Cloverdale | 10,978 |
| 94931 | Cotati | 9,487 |
| 94515 | Calistoga | 6,946 |
| 95436 | Forestville | 5,821 |
| 95446 | Guerneville | 4,607 |
| 95442 | Glen Ellen | 3,449 |
| 94951 | Penngrove | 3,294 |
| 95452 | Kenwood | 1,762 |
| 95441 | Geyserville | 1,648 |
| 95421 | Cazadero | 1,570 |
| 94923 | Bodega Bay | 1,483 |
| 95497 | The Sea Ranch | 1,275 |
| 95465 | Occidental | 1,203 |
| 95462 | Monte Rio | 1,058 |
| 95444 | Graton | 625 |
| 95439 | Fulton | 486 |
| 95471 | Rio Nido | 394 |
| 95412 | Annapolis | 331 |
| 95450 | Jenner | 224 |
| 95419 | Camp Meeker | 152 |
| 95431 | Eldridge | 43 |
| 95486 | Villa Grande | 17 |
| 95480 | Stewarts Point | 8 |
| 94922 | Bodega | 6 |
| 95430 | Duncans Mills | 0 |
| 94972 | Valley Ford | 0 |
The data shown reflect ZCTAs from the US Census. As of 2025, there are 38 ZCTAs in Sonoma County, California (US Census).