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
Population
City
9492846,231Rohnert Park
9540344,677Santa Rosa
9540742,138Santa Rosa
9495438,201Petaluma
9540437,437Santa Rosa
9540136,905Santa Rosa
9547636,386Sonoma
9495233,519Petaluma
9547228,443Sebastopol
9549228,096Windsor
9540926,158Santa Rosa
9540523,748Santa Rosa
9544816,745Healdsburg
9542511,331Cloverdale
949318,945Cotati
954366,008Forestville
954464,709Guerneville
949513,574Penngrove
954422,592Glen Ellen
954411,819Geyserville
954211,679Cazadero
949231,390Bodega Bay
954651,251Occidental
954521,240Kenwood
954971,224The Sea Ranch
954621,091Monte Rio
95439782Fulton
95471780Rio Nido
95444516Graton
94922509Bodega
95450272Jenner
95412271Annapolis
95419169Camp Meeker
94972153Valley Ford
9543176Eldridge
9548627Villa Grande
954806Stewarts Point
95430Duncans Mills
showing: 38 rows

Zip Codes in Sonoma County, California by Population (2024)