There are 38 zip codes in Sonoma County, California. The most populated is 94928, located in Rohnert Park. * 2024 populations estimated based on the latest ACS 5-year data.

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Zip Code
City
Population
94928Rohnert Park46,231
95403Santa Rosa44,677
95407Santa Rosa42,138
94954Petaluma38,201
95404Santa Rosa37,437
95401Santa Rosa36,905
95476Sonoma36,386
95472Sebastopol28,443
95492Windsor28,096
95409Santa Rosa26,158
95405Santa Rosa23,748
95448Healdsburg16,745
95425Cloverdale11,331
94931Cotati8,945
94515Calistoga7,024
95436Forestville6,008
95446Guerneville4,709
94951Penngrove3,574
95442Glen Ellen2,592
95441Geyserville1,819
95421Cazadero1,679
94923Bodega Bay1,390
95465Occidental1,251
95452Kenwood1,240
95497The Sea Ranch1,224
95462Monte Rio1,091
95439Fulton782
95471Rio Nido780
95444Graton516
94922Bodega509
95450Jenner272
95412Annapolis271
95419Camp Meeker169
94972Valley Ford153
95431Eldridge76
95486Villa Grande27
95480Stewarts Point6
95430Duncans Mills0
showing: 38 rows

Sonoma County, California Zip Codes by Population (2024)