| Locality | Post Code |
|---|---|
| Healdsburg, Sonoma | 95448 |
| Jenner, Sonoma | 95450 |
| Kenwood, Sonoma | 95409, 95452 |
| Lakeville, Sonoma | 94952 |
| Larkfield, Sonoma | 95403 |
| Monte Rio, Sonoma | 95462 |
| Occidental, Sonoma | 95465 |
| Penngrove, Sonoma | 94951 |
| Petaluma, Sonoma | 94952, 94954, 94999 |
| Rio Nido, Sonoma | 95471 |
| Rohnert Park, Sonoma | 94928 |
| Roseland, Sonoma | 95407 |
| Russian River, Sonoma | 95462 |
| Russian River Meadows, Sonoma | 95462 |
| Salmon Creek, Sonoma | 94923 |
| Santa Rosa, Sonoma | 95401, 95403, 95404, 95405, 95407, … |
| Schellville, Sonoma | 95476 |
| Sebastopol, Sonoma | 95472 |
| Sonoma, Sonoma | 95476 |
| Stewarts Point, Sonoma | 95480 |
| Stewarts Point Rancheria, Sonoma | 95480 |
| The Geysers, Sonoma | 95425 |
| The Sea Ranch, Sonoma | 95497 |
| Valley Ford, Sonoma | 94972 |
| Villa Grande, Sonoma | 95486 |
| Vineburg, Sonoma | 95487 |