Area Code 510 - Details, official location, official service date
https://www.areacodehelp.com/where/area_code_510.shtml
WebArea code 510 serves much of the Eastern Bay area in Alameda County and the western portion of Contra Costa County in California including the larger cities and communities of Alameda, Berkeley, Castro Valley, El Cerrito, Emeryville, Fremont, Hayward, Hercules, Newark, Oakland, Piedmont, Pinole, Richmond, San Leandro, San Lorenzo, San Pablo, …
DA: 19 PA: 4 MOZ Rank: 97 Up or Down: Up