ALAMEDA, CA
CONTRA COSTA, CA
EL DORADO, CA
HUMBOLDT, CA
LOS ANGELES, CA
MARIN, CA
NAPA, CA
ORANGE, CA
SACRAMENTO, CA
SAN DIEGO, CA
SAN FRANCISCO, CA
SAN JOAQUIN, CA
SAN MATEO, CA
SANTA CLARA, CA
SANTA CRUZ, CA
SOLANO, CA
STANISLAUS, CA
Area Code 510 covers 61 Cities
ALAMEDA
ALAMO
ALBANY
ANTIOCH
BENICIA
BERKELEY
CASTRO VALLEY
CONCORD
CORTE MADERA
CROCKETT
DALY CITY
DANVILLE
DUBLIN
EL CERRITO
EL DORADO HILLS
EL SOBRANTE
EMERYVILLE
EUREKA
FAIRFIELD
FREMONT
GARDEN GROVE
HAYWARD
HERCULES
IRVINE
LAFAYETTE
LIVERMORE
LOS ANGELES
MARTINEZ
MENLO PARK
MILL VALLEY
MILPITAS
NAPA
NEWARK
OAKLAND
ORINDA
PALO ALTO
PIEDMONT
PINOLE
PITTSBURG
PLEASANTON
PORT COSTA
RICHMOND
RIO VISTA
RODEO
SACRAMENTO
SAN CARLOS
SAN DIEGO
SAN FRANCISCO
SAN JOSE
SAN LEANDRO
SAN LORENZO
SAN PABLO
SAN RAMON
STOCKTON
SUNNYVALE
TRACY
TURLOCK
UNION CITY
VALLEJO
WALNUT CREEK
WATSONVILLE