Zip Area Code

Los Alamos, California

Los Alamos, California, in Santa Barbara County, has ZIP code 93440 and area code 805, with 820 as an overlay.

ZIP code
93440
Area codes
805, 820
Time zone
Pacific Time
Coordinates
34.7457, -120.2049

ZIP codes in Los Alamos

ZIP codePost officeCountyArea codes
93440Los AlamosSanta Barbara County805, 820

Area codes for Los Alamos

  • Area code 805

    In service since 1957. Shares its area with 820. Local calls are dialed with 1 plus ten digits.

  • Area code 820

    In service since June 30, 2018. Shares its area with 805. 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

Los Alamos is in the Pacific Time zone.

Towns near Los Alamos