Kensington is an affluent unincorporated community and census designated place located in the East Bay, part of the San Francisco Bay Area, in Contra Costa County, California, United States. The population was 5,077 at the 2010 census.
Kensington is an unincorporated community of Contra Costa County that borders Alameda County. Unlike many unincorporated communities, Kensington has local jurisdiction over its police department, park services, refuse collection and fire department. These are governed by two elected boards. The five-member Kensington Police Protection and Community Services District (KPPCSD) Board oversees the police department, park services, and refuse collection. The KPPCSD is also responsible for maintaining the public stairways and paths in Kensington. The five-member Kensington Fire District Board oversees the fire department and emergency medical services, of which the day-to-day function is outsourced to the fire department of El Cerrito, a neighboring city. The Kensington Municipal Advisory Board (KMAC) is a commission whose members are appointed by the Contra Costa County Board of Supervisors. KMAC is charged with land-use and development review and provides recommendations to the county planning and public works departments.
The sewer system is maintained by the Stege Sanitary District, which also includes the city of El Cerrito and the Richmond Annex area of Richmond. The East Bay Municipal Utility District supplies water and wastewater treatment services. AC Transit operates local transit service. The house numbers on streets follow the pattern used in Berkeley and Albany and mail service is provided by the Berkeley post office.