What are the Altamont, South Dakota Zip Codes for 2020, 2019Primary Zip Codes for AltamontZip CodePrimary CitySecondary City57226Clear LakeAltamont, Tunnerville,Cities sharing Zip Codes with AltamontZip CodePrimary CitySecondary CityMore Information57226Clear LakeAltamont57226Clear LakeTunnervilleAdvertisements