510 area code
Area code 510 is in California, United States, in the Pacific time zone. It covers Alameda, Berkeley, Castro Valley, El Cerrito, Fremont, Hayward and more.
State / Province
California (CA)
Country
United States
Region
West
Time zone
Pacific
Current local time
—
Approx. location
37.4325, -121.8075 ↗
How to dial a 510 number
- National format
- (510) 555-0100
- International (E.164)
- +1 510 555 0100
- From abroad
- +1 510 …
Cities & areas in the 510 area code
13 known locations — a selection:
Alameda
Berkeley
Castro Valley
El Cerrito
Fremont
Hayward
Newark
Oakland
Richmond
San Leandro
San Lorenzo
San Pablo
Union City
About area code 510
Area code 510 is one of the North American Numbering Plan (NANP) codes serving California. In the NANP a full number looks like +1 (510) NXX-XXXX: the +1 is the country code for the US and Canada, 510 is the area code, and the remaining seven digits identify the specific line. A call is charged by your own carrier's plan, not by the area code itself.