Explore Cotati local geography, civic resources and voter guides, with dated official population and registration facts for Sonoma County.
At a glance: Cotati is an incorporated city in Sonoma County. Population: 7,264 (California Department of Finance estimate as of January 1, 2026). Registered voters: 5,106 (California Secretary of State, as of September 4, 2026).
Cotati occupies the southern Santa Rosa Plain beside Highway 101, immediately adjoining Rohnert Park. Its unusually shaped historic center and small-scale downtown distinguish it from its larger neighbor. La Plaza Park is a central public gathering space within the historic street pattern. Civic Center Park, the Cotati Room, and other city facilities provide recreation and meeting options around West Sierra Avenue. Cotati incorporated on July 16, 1963. It is a general-law city with a council-manager government, retaining a separate municipal identity despite its close urban connection with Rohnert Park.
No. They are neighboring incorporated cities with separate councils, clerks, and municipal services.
The city lists the Cotati Room and classrooms among facilities available for meetings, classes, and recreation programs.
Contact the Cotati city clerk. Sonoma County's Registrar of Voters directs city candidates to their municipal clerk.
5,106 (California Secretary of State, as of September 4, 2026).
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