Explore Lafayette local geography, civic resources and voter guides, with dated official population and registration facts for Contra Costa County.
At a glance: Lafayette is an incorporated city in Contra Costa County. Population: 25,321 (California Department of Finance estimate as of January 1, 2026). Registered voters: 19,222 (California Secretary of State, as of September 4, 2026).
Lafayette occupies a series of wooded valleys east of the Berkeley Hills, with its downtown following Mount Diablo Boulevard. Burton Valley and the reservoir landscape give the city a strong connection to hills, trails, and open space. The Lafayette Community Center in Burton Valley supports classes, gatherings, and recreation, including an adjoining multisport rink. Lafayette Reservoir provides another major outdoor resource, but its recreation area is maintained by the East Bay Municipal Utility District rather than the city. Lafayette incorporated on July 29, 1968. It is a general-law city operating with a council-manager structure.
No. EBMUD maintains Lafayette Reservoir Recreation Area; the city manages its own parks, trails, and community-center programs.
It is at 500 St. Mary's Road in Burton Valley.
Contra Costa County Elections is the countywide source for registration, ballot tracking resources, and voting-location information.
19,222 (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.