California's 11th congressional district is located in northern California, encompassing parts of San Joaquin, Alameda, Contra Costa, and Santa Clara counties.
California's 11th congressional district is located in northern California. California's 11th congressional district was encompassing parts of San Joaquin. California's 11th congressional district was encompassing parts of Alameda. California's 11th congressional district was encompassing parts of Contra Costa. California's 11th congressional district was encompassing parts of Santa Clara counties.