Richmond is a city in western Contra Costa County, California, United States. The city was incorporated on August 7, 1905. Located in the East Bay region of the San Francisco Bay Area, Richmond borders the cities of 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. Richmond is one of two cities, the other being San Rafael, California, that sits on the shores of San Francisco Bay and San Pablo Bay simultaneously.Under the McLaughlin Administration, Richmond was the largest city in the United States served by a Green Party mayor. As of the 2010 U.S. Census, the city's population is at 103,710, making it the second largest city in the United States named Richmond. The largest, Richmond, Virginia, is the namesake of the California city.