Richmond is a city in western Contra Costa County, California, United States. The city was incorporated on August 3, 1905, and has a city council. Located in the San Francisco Bay Area's East Bay region, Richmond borders San Pablo, Albany, El Cerrito and Pinole in addition to the unincorporated communities of North Richmond, Hasford Heights, Kensington, El Sobrante, Bayview-Montalvin Manor, Tara Hills, and East Richmond Heights, and for a short distance San Francisco on Red Rock Island in the San Francisco Bay.

Contra Costa County is a county located in the U.S. state of California, in the East Bay of the San Francisco Bay Area. As of the 2020 United States Census, the population was 1,165,927. The county seat is Martinez. It occupies the northern portion of the East Bay region of the San Francisco Bay Area and is primarily suburban. The county's name refers to its position on the other side of the bay from San Francisco. Contra Costa County is included in the San Francisco–Oakland–Berkeley, CA Metropolitan Statistical Area.