38 zips
| Zip Code | City | Population ↓ |
|---|---|---|
| 94928 | Rohnert Park | 46,463 |
| 95403 | Santa Rosa | 45,570 |
| 95407 | Santa Rosa | 42,135 |
| 94954 | Petaluma | 38,000 |
| 95404 | Santa Rosa | 37,317 |
| 95401 | Santa Rosa | 36,842 |
| 95476 | Sonoma | 35,139 |
| 95472 | Sebastopol | 28,588 |
| 95492 | Windsor | 27,455 |
| 95409 | Santa Rosa | 25,960 |
| 95405 | Santa Rosa | 22,811 |
| 95448 | Healdsburg | 15,868 |
| 95425 | Cloverdale | 11,410 |
| 94931 | Cotati | 9,320 |
| 94515 | Calistoga | 6,921 |
| 95436 | Forestville | 5,999 |
| 95446 | Guerneville | 4,808 |
| 94951 | Penngrove | 3,628 |
| 95442 | Glen Ellen | 2,986 |
| 95441 | Geyserville | 1,842 |
| 94923 | Bodega Bay | 1,457 |
| 95421 | Cazadero | 1,453 |
| 95452 | Kenwood | 1,388 |
| 95497 | The Sea Ranch | 1,200 |
| 95465 | Occidental | 1,154 |
| 95462 | Monte Rio | 1,122 |
| 95444 | Graton | 748 |
| 95439 | Fulton | 708 |
| 95471 | Rio Nido | 604 |
| 94922 | Bodega | 312 |
| 95412 | Annapolis | 227 |
| 95450 | Jenner | 215 |
| 95419 | Camp Meeker | 160 |
| 94972 | Valley Ford | 153 |
| 95431 | Eldridge | 47 |
| 95486 | Villa Grande | 15 |
| 95480 | Stewarts Point | 9 |
| 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).