Zip Area Code

Washington County, Oklahoma

Washington County, Oklahoma, has 8 towns and 8 ZIP codes, in area code 918, with 539 as an overlay.

Towns in Washington County, A to Z

TownZIP codesArea codes
Bartlesville74003, 74004, 74005, 74006918, 539
Bowringnearest74022918, 539
Copan74022918, 539
Dewey74029918, 539
Ochelata74051918, 539
Ramona74061918, 539
Vera74082918, 539
Whippoorwillnearest74022918, 539

ZIP codes in Washington County

Area codes in Washington County

  • Area code 918

    In service since 1953. Shares its area with 539. Local calls are dialed with ten digits.

  • Area code 539

    In service since April 1, 2011. Shares its area with 918. Local calls are dialed with ten digits.