Zip Area Code

Oacoma, South Dakota

Oacoma, South Dakota, in Lyman County, has ZIP code 57365 and area code 605.

ZIP code
57365
Area code
605
Coordinates
43.7975, -99.3947

ZIP codes in Oacoma

ZIP codePost officeCountyArea codes
57365OacomaLyman County605

Area code for Oacoma

  • Area code 605

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

Towns near Oacoma