Cotati, California Zip Codes
📍 Cotati is in Sonoma County, California with 2 zip codes; the most populous is 94931.
Cotati is a USPS city name in Sonoma County, California with a Census population of approximately 8,945 across its ZIP codes. Sonoma County as a whole has 51 ZIP codes in this directory. Below you'll find every zip code serving Cotati with population, income and home value, a map, and the city's affordability profile.
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 Cotati Zip Codes
Cotati at a Glance
Cotati has 2 ZIP codes in this directory: 1 standard delivery ZIP and 1 PO Box or unique ZIP that carries no resident population in Census data. The 1 ZIP with published Census housing data cover 8,945 residents, the largest being 94931 with 8,945 people.
The median ZIP in Cotati has a household income of $98,475 and a home value of $720,400, a price-to-income ratio of 7.3, above the 6.7 California ZIP median. Median rent across these ZIPs is $1,708 a month.
60% of households in the typical Cotati ZIP own their home (statewide ZIP median 64%). 36% of adults hold a bachelor's degree, above the 31% statewide median. The median poverty rate is 7.1%, below the 10.8% statewide ZIP median. Overall density is about 1,162 residents per square mile across 8 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.
Cotati Zip Code Map
Interactive map of Cotati, California zip codes. Click any marker for details.