| ZIP Codes: | 50 ZIP Codes (32 Standard, 17 PO Box, 1 Unique) [See All] |
| Area Codes: | 369 / 707 |
| Timezone: | Pacific (GMT -08:00) |
| Local Time: | 2:11:31 PM |
| Population: | 485,632 [See All] |
| FIPS: | 06097 |
| CBSA: | Santa Rosa-Petaluma, CA |
| Land Area: | 1,709 sq mi |
| Water Area: | 18 sq mi |
| Coordinates: | 38.4276, -122.8226 |
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485,632 residents live across 50 ZIPs covering 1,709 sq mi, served by 35 distinct USPS-recognized cities.
Population moved from 491,925 to 485,472 from 2014 to 2024 — a -1.3% change. 14 ZIPs gained residents, 21 lost (and 1 held flat).
The county's wealthiest ZIP 95442 (Glen Ellen, $164,750 median) and poorest ZIP 95421 (Cazadero, $78,906) are 38.0 miles apart — a 2.1× income gap across local geography.
Median home values vary 2.3× across this county — from $610,600 in 95446 (Guerneville) to $1,381,800 in 95497 (The Sea Ranch).
Density varies 627× across the county — from 10 people/sq mi in 95441 (Geyserville) to 6,243 in 94928 (Rohnert Park).
Educational attainment ranges from 17.3% bachelor's+ in 95407 (Santa Rosa) to 75.0% in 95497 (The Sea Ranch) — the breadth of educational profiles across the area.
Within California, this is the #17 most populous of 58 counties and ranks #14 for median household income .
Hosts 1 single-entity Unique ZIP: 94926State Farm Insurance .
Weighted by population, the typical household earns about $106,096 across the county — reflecting what a typical resident sees, not a simple ZIP average.
38.5% of adults age 25+ hold a bachelor's degree or higher (136,615 of 355,115 reporting).
32 Standard delivery, 17 PO Box only, 1 single-entity Unique ZIPs serve this county.
| ZIP | City | Type | Population | Median Income | Area (sq mi) | 10-yr Growth |
|---|---|---|---|---|---|---|
| 94928 | Rohnert Park | Standard | 46,829 | $99,280 | 7.5 | 9.8% |
| 95403 | Santa Rosa | Standard | 45,806 | $98,191 | 21.6 | 2.0% |
| 95407 | Santa Rosa | Standard | 42,036 | $82,863 | 21.6 | 3.4% |
| 94954 | Petaluma | Standard | 37,574 | $113,527 | 73.9 | 2.6% |
| 95404 | Santa Rosa | Standard | 37,011 | $105,437 | 75.2 | -8.1% |
| 95401 | Santa Rosa | Standard | 36,861 | $93,615 | 21.3 | -4.5% |
| 95476 | Sonoma | Standard | 35,196 | $105,374 | 110.3 | -9.3% |
| 94952 | Petaluma | Standard | 33,785 | $117,343 | 216.2 | -3.7% |
| 95472 | Sebastopol | Standard | 28,747 | $108,925 | 67.2 | -2.2% |
| 95492 | Windsor | Standard | 27,429 | $134,211 | 20.1 | -7.4% |
| 95409 | Santa Rosa | Standard | 25,616 | $107,867 | 34.4 | -0.7% |
| 95405 | Santa Rosa | Standard | 22,744 | $118,299 | 5.2 | 5.7% |
| 95448 | Healdsburg | Standard | 16,077 | $105,120 | 192.7 | -5.9% |
| 95425 | Cloverdale | Standard | 10,978 | $119,092 | 186.9 | 2.6% |
| 94931 | Cotati | Standard | 9,487 | $101,994 | 8.1 | 10.7% |
| 95436 | Forestville | Standard | 5,821 | $109,531 | 24.2 | 4.3% |
| 95446 | Guerneville | Standard | 4,607 | $85,833 | 35.6 | 4.3% |
| 95442 | Glen Ellen | Standard | 3,449 | $164,750 | 24.3 | 9.4% |
| 94951 | Penngrove | Standard | 3,294 | $106,332 | 12.9 | -31.5% |
| 95452 | Kenwood | Standard | 1,762 | $118,986 | 17.1 | 34.1% |
| 95441 | Geyserville | Standard | 1,648 | $126,806 | 165.6 | -17.1% |
| 95421 | Cazadero | Standard | 1,570 | $78,906 | 120.3 | 2.1% |
| 94923 | Bodega Bay | Standard | 1,483 | $147,546 | 28.3 | 101.5% |
| 95497 | The Sea Ranch | PO Box | 1,275 | $138,125 | 16.4 | 29.7% |
| 95465 | Occidental | Standard | 1,203 | $120,781 | 31.4 | -48.3% |
| 95462 | Monte Rio | Standard | 1,058 | $85,536 | 4.9 | -13.0% |
| 95444 | Graton | Standard | 625 | $105,179 | 0.3 | -19.3% |
| 95439 | Fulton | Standard | 486 | — | 2.5 | -14.1% |
| 95471 | Rio Nido | PO Box | 394 | — | 0.0 | -25.4% |
| 95412 | Annapolis | Standard | 331 | — | 95.8 | -6.0% |
| 95450 | Jenner | Standard | 224 | $123,125 | 32.4 | -1.8% |
| 95419 | Camp Meeker | PO Box | 152 | — | 0.2 | — |
| 95431 | Eldridge | PO Box | 43 | — | 0.0 | -91.6% |
| 95486 | Villa Grande | PO Box | 17 | — | 0.0 | -68.5% |
| 95480 | Stewarts Point | PO Box | 8 | — | 0.9 | — |
| 94922 | Bodega | Standard | 6 | — | 11.7 | -98.8% |
| 94972 | Valley Ford | Standard | 0 | — | 15.3 | -100.0% |
| 95430 | Duncans Mills | PO Box | 0 | — | 6.9 | — |
| 95402 | Santa Rosa | PO Box | — | — | 0.0 | — |
| 95406 | Santa Rosa | PO Box | — | — | 0.0 | — |
| 95473 | Sebastopol | PO Box | — | — | 0.0 | — |
| 95433 | El Verano | PO Box | — | — | 0.0 | — |
| 95416 | Boyes Hot Springs | PO Box | — | — | 0.0 | — |
| 94955 | Petaluma | PO Box | — | — | 0.0 | — |
| 94953 | Petaluma | PO Box | — | — | 0.0 | — |
| 94975 | Petaluma | PO Box | — | — | 0.0 | — |
| 95487 | Vineburg | PO Box | — | — | 0.0 | — |
| 94999 | Petaluma | Standard | — | — | 0.0 | — |
| 94927 | Rohnert Park | PO Box | — | — | 0.0 | — |
| 94926 | Rohnert Park | Unique | — | — | 0.0 | — |