Blackhawk is an unincorporated master planned community and census-designated place located in Contra Costa County, California, United States, east of Danville and Oakland. As of the 2010 census it had a population of 9,354. Governed by county rules/regulations and a homeowner association (HOA), Blackhawk has a country club, two golf courses, sports complex, restaurants, and the adjacent Blackhawk Plaza. 24-hour security plus additional law enforcement contracted through the Contra Costa county is provided by HOA dues. The area is covered by the San Ramon Valley Fire Protection District.