Explore Oroville local geography, civic resources and voter guides, with dated official population and registration facts for Butte County.
At a glance: Oroville is an incorporated city in Butte County. Population: 20,664 (California Department of Finance estimate as of January 1, 2026). Registered voters: 9,520 (California Secretary of State, as of September 4, 2026).
Oroville occupies the Feather River's transition from Sierra foothills to the Sacramento Valley, downstream from Oroville Dam. Riverbend Park connects recreation with the Feather River corridor. The city's cultural resources include the Chinese Temple and Museum Complex and other municipal museums. Oroville is an incorporated city and the seat of Butte County. Oroville incorporated on January 3, 1906.
No. The dam is part of California's State Water Project.
Oroville's official website maintains a parks-and-recreation section.
Butte County Elections provides voter registration and county election services.
9,520 (California Secretary of State, as of September 4, 2026).
CA Slates began with shared voter guides in 2012 and expanded into its current publication family and connected program.