Zip Area Code

Alameda, California

Alameda, California, in Alameda County, has ZIP codes 94501 and 94502 and area code 510, with 341 as an overlay.

ZIP codes
94501, 94502
Area codes
510, 341
Time zone
Pacific Time
Coordinates
37.7529, -122.2540

ZIP codes in Alameda

ZIP codePost officeCountyArea codes
94501AlamedaAlameda County510, 341
94502AlamedaAlameda County510, 341

Area codes for Alameda

  • Area code 510

    In service since September 2, 1991. Shares its area with 341. Local calls are dialed with 1 plus ten digits.

  • Area code 341

    In service since July 22, 2019. Shares its area with 510. Local calls are dialed with 1 plus ten digits.

Area codes here are matched from telephone rate centers, so a place near a boundary can have local numbers from either side of it.

Time zone

Alameda is in the Pacific Time zone.

Towns near Alameda