Zip Area Code

Gregory County, South Dakota

Gregory County, South Dakota, has 7 towns and 6 ZIP codes, in area code 605.

Towns in Gregory County, A to Z

TownZIP codesArea codes
Bonesteel57317605
Burke57523605
Fairfax57335605
Gregory57533605
Herrick57538605
Saint Charles57571605
St. Charlesnearest57317605

ZIP codes in Gregory County

Area code in Gregory County

  • Area code 605

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