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U.S. ZIP Codes Database 2026

Search by ZIP code, city, county, or state and find clear postal details with maps, time zones, and area code data.

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Sonoma County ZIP Codes

Browse all ZIP Codes, cities, and associated area codes registered in Sonoma County.

County State ZIP Code City Area Codes
Sonoma County CA 94922 Bodega 707
Sonoma County CA 94923 Bodega Bay 415, 628, 707
Sonoma County CA 94926 Rohnert Park 707
Sonoma County CA 94927 Rohnert Park 707
Sonoma County CA 94928 Rohnert Park 707
Sonoma County CA 94931 Cotati 707
Sonoma County CA 94951 Penngrove 707
Sonoma County CA 94952 Petaluma 415, 628, 707
Sonoma County CA 94953 Petaluma 707
Sonoma County CA 94954 Petaluma 415, 628, 707
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About U.S. ZIP Codes

ZIP codes are a United States Postal Service system introduced in 1963 to make mail routing more accurate and efficient. The standard format uses five digits, while ZIP+4 adds four more digits for a more precise delivery segment.

ZIP codes cover the United States, its territories, military mail routes, and other USPS delivery points. This directory organizes that data for practical lookup by ZIP code, city, county, and state.