What are the Garretson, South Dakota Zip Codes for 2020, 2019Primary Zip Codes for GarretsonZip CodePrimary CitySecondary City57030GarretsonGarretson, Palisade, ShermanCities sharing Zip Codes with GarretsonZip CodePrimary CitySecondary CityMore Information57030GarretsonSherman57030GarretsonPalisadeAdvertisements