Explore Sonoma local geography, civic resources and voter guides, with dated official population and registration facts for Sonoma County.
At a glance: Sonoma is an incorporated city in Sonoma County. Population: 10,528 (California Department of Finance estimate as of January 1, 2026). Registered voters: 7,834 (California Secretary of State, as of September 4, 2026).
Sonoma occupies the southern Sonoma Valley, with a plaza-centered historic core surrounded by residential neighborhoods and nearby vineyards. The city is only one part of the much larger valley and county that share its name. Sonoma Plaza contains City Hall, lawns, playgrounds, a duck pond, and the Grinstead Amphitheatre. Sonoma Garden Park and the city's trail network add agricultural and outdoor resources beyond the downtown square. Sonoma's recorded municipal incorporation date is September 3, 1883. It is a general-law city with a council-manager government, distinct from Sonoma County government and the surrounding unincorporated valley.
Yes. City Hall stands in the center of Sonoma Plaza.
The city's Plaza guidance prohibits dogs, with an exception for assistance animals. Check current rules before visiting.
No. City-election eligibility depends on residence within the incorporated city, not simply a Sonoma Valley location or mailing address.
7,834 (California Secretary of State, as of September 4, 2026).
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