Zip Area Code

Oak Park, California

Oak Park, California, in Ventura County, has ZIP code 91377 and area code 805, with 820 as an overlay.

ZIP code
91377
Area codes
805, 820
Time zone
Pacific Time
Coordinates
34.1850, -118.7669

ZIP codes in Oak Park

ZIP codePost officeCountyArea codes
91377Oak ParkVentura County805, 820

Area codes for Oak Park

  • 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

Oak Park is in the Pacific Time zone.

Towns near Oak Park