Bay Point, formerly West Pittsburg, is a suburb of the Bay Area and census-designated place located in eastern Contra Costa County, California, just west of the city of Pittsburg and northeast over Willow Pass from Concord. The population was 21,349 at the 2010 census. The Pittsburg-Bay Point terminal of the Bay Area Rapid Transit (BART) rail system is located adjacent to Bay Point in Pittsburg. The community is traversed by a freeway, State Route 4, the California Delta Highway. Being unincorporated, Bay Point does not have its own police department.