Explore San Leandro local geography, civic resources and voter guides, with dated official population and registration facts for Alameda County.
At a glance: San Leandro is an incorporated city in Alameda County. Population: 87,431 (California Department of Finance estimate as of January 1, 2026). Registered voters: 52,625 (California Secretary of State, as of September 4, 2026).
San Leandro extends from San Francisco Bay's eastern shore toward the lower East Bay hills. Its downtown, established residential districts, industrial corridors, and Mulford shoreline neighborhood create a varied city between Oakland and Hayward. San Leandro operates its own public library system, including the Main Library and neighborhood branches. The city's Mulford-Marina Branch Library replacement project illustrates continuing investment in public facilities serving the bayside neighborhoods. San Leandro incorporated on March 21, 1872. It is a charter city operating under council-manager government.
No. It is a municipal library system operated by the City of San Leandro.
Do not assume completion. The official project page describes a replacement facility and a changing construction schedule; check its latest update for access and opening information.
Use the Alameda County Registrar of Voters.
52,625 (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.