Explore Larkspur local geography, civic resources and voter guides, with dated official population and registration facts for Marin County.
At a glance: Larkspur is an incorporated city in Marin County. Population: 12,650 (California Department of Finance estimate as of January 1, 2026). Registered voters: 9,462 (California Secretary of State, as of September 4, 2026).
Larkspur combines an older Magnolia Avenue center with creekside neighborhoods and a bayside transportation district. Mount Tamalpais forms a strong backdrop, while Corte Madera Creek links the inland city to the bay. Piper Park offers substantial public recreation space along Doherty Drive. The historic downtown civic buildings and the Larkspur ferry terminal serve very different public functions, connecting neighborhood life with regional travel. Larkspur incorporated on March 1, 1908. It is a general-law city with a council-manager government, with municipal offices identified on Magnolia Avenue.
Piper Park is on Doherty Drive near the city's schools and central neighborhoods.
No. Larkspur ferry service is a regional transit function; use Golden Gate Ferry for schedules and fares rather than municipal park or clerk contacts.
Marin County Elections provides address-specific voter information and official results.
9,462 (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.