Zip Area Code

Buffalo County, South Dakota

Buffalo County, South Dakota, has 2 towns and 2 ZIP codes, in area code 605.

Towns in Buffalo County, A to Z

TownZIP codesArea codes
Fort Thompson57339605
Gann Valley57341605

ZIP codes in Buffalo County

Area code in Buffalo County

  • Area code 605

    In service since 1947. Local calls are dialed with ten digits; dialing 1 plus ten digits also works.