Sonoma County, California Zip Codes
📍 Sonoma County has 51 zip codes with a population of 462,603.
Sonoma County is located in California with a land area of 1,590 square miles. The county seat is Santa Rosa. Below you'll find all 51 zip codes in Sonoma County with population, income and home value, the county's affordability profile, and links to its 32 city pages.
Population and demographic data sourced from the U.S. Census Bureau American Community Survey (ACS) 5-Year Estimates. ZIP code routing data sourced from the United States Postal Service (USPS).
All Sonoma County Zip Codes
Sonoma County at a Glance
Sonoma County has 51 ZIP codes in this directory: 37 standard delivery ZIPs and 14 PO Box or unique ZIPs that carry no resident population in Census data. The 30 ZIPs with published Census housing data cover 462,603 residents, the largest being 94928 (Rohnert Park) with 46,231 people.
The median ZIP in Sonoma County has a household income of $100,331 and a home value of $764,350, a price-to-income ratio of 7.9, above the 6.7 California ZIP median. Affordability ranges from 94922 in Bodega at a ratio of 4.7 to 95442 in Glen Ellen, where the median home is $1,437,500. The highest median income is in 94922 (Bodega) at $170,733. Median rent across these ZIPs is $1,837 a month.
68% of households in the typical Sonoma County ZIP own their home (statewide ZIP median 64%). 40% of adults hold a bachelor's degree, above the 31% statewide median. The median poverty rate is 8.5%, below the 10.8% statewide ZIP median. Overall density is about 291 residents per square mile across 1,590 square miles of ZIP land area.
Medians are taken across the ZIP codes listed below (each ZIP weighted equally); PO Box and no-data ZIPs are excluded. Definitions on the methodology page; statewide comparisons in the 2026 California ZIP Code Affordability Report.
Sonoma County Zip Code Map
Interactive map of Sonoma County, California zip codes.