Zip Area Code

Gilliam County, Oregon

Gilliam County, Oregon, has 3 towns and 3 ZIP codes, in area code 541, with 458 as an overlay.

Towns in Gilliam County, A to Z

TownZIP codesArea codes
Arlington97812541, 458
Condon97823541, 458
Mikkalo97861541, 458

ZIP codes in Gilliam County

Area codes in Gilliam County

  • Area code 541

    In service since November 5, 1995. Shares its area with 458. Local calls are dialed with ten digits; dialing 1 plus ten digits also works.

  • Area code 458

    In service since February 10, 2010. Shares its area with 541. Local calls are dialed with ten digits; dialing 1 plus ten digits also works.