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The 510 area code serves the cities of Alameda, Albany, Berkeley, Emeryville, Fremont, Hayward, Newark, Oakland, Piedmont, San Leandro and Union City in Alameda County; and the cities of El ...
The 510 area code serves the cities of Alameda, Albany, Berkeley, Emeryville, Fremont, Hayward, Newark, Oakland, Piedmont, San Leandro and Union City in Alameda County; and the cities of El ...
The 510 area code was created in 1991 after splitting off from the 415 region, which covers San Francisco and Marin counties. 510 was split once again in 1998, to pave the way for the 925 area code.
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