Explore San Luis Obispo local geography, civic resources and voter guides, with dated official population and registration facts for San Luis Obispo County.
At a glance: San Luis Obispo is an incorporated city in San Luis Obispo County. Population: 50,165 (California Department of Finance estimate as of January 1, 2026). Registered voters: 29,553 (California Secretary of State, as of September 4, 2026).
San Luis Obispo occupies an inland valley close to the coast, with volcanic hills framing its urban area. San Luis Obispo Creek, the downtown street grid, and the nearby Cal Poly campus create several distinct centers of daily activity. Mission Plaza provides downtown gathering and event space beside the historic mission. Laguna Lake Park and the city's recreation facilities offer a broader network of outdoor and organized community activities. San Luis Obispo incorporated on February 16, 1856. It is a charter city with a council-manager government and serves as the county seat, while remaining institutionally separate from county government.
The city lists Mission Plaza at 989 Chorro Street beside Mission San Luis Obispo de Tolosa.
No. The city's facility guidance identifies reservations and special permits for activities that require additional oversight.
The San Luis Obispo County Clerk-Recorder administers elections and voter services; city candidacy questions should begin with the city clerk.
29,553 (California Secretary of State, as of September 4, 2026).
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