Cities included in Contra Costa County: Concord, Antioch, Richmond, San Ramon, Pittsburg, Walnut Creek, Brentwood, Danville, Oakley, Martinez, Pleasant Hill, San Pablo, Hercules, El Cerrito, Lafayette, Bay Point, Orinda, Pinole, Moraga, Discovery Bay, Alamo, Clayton, Blackhawk, Rodeo, Contra Costa Centre, Camino Tassajara, Saranap, Kensington, Pacheco, Tara Hills, North Richmond, San Miguel, Rollingwood, Crockett, Vine Hill, East Richmond Heights, Reliez Valley, Montalvin Manor, Bethel Island, Byron, Knightsen, Shell Ridge, Acalanes Ridge, Alhambra Valley, Castle Hill, Norris Canyon, Diablo, North Gate, Clyde, Port Costa

Zip Codes included in Contra Costa County: 94505, 94506, 94507, 94509, 94511, 94513, 94514, 94516, 94517, 94518, 94519, 94520, 94521, 94523, 94525, 94526, 94528, 94530, 94531, 94547, 94548, 94549, 94553, 94556, 94561, 94563, 94564, 94565, 94569, 94572, 94575, 94582, 94583, 94595, 94596, 94597, 94598, 94708, 94801, 94803, 94804, 94805, 94806