What are the Junction City, South Dakota Zip Codes for 2020, 2019Primary Zip Codes for Junction CityZip CodePrimary CitySecondary City57025Elk PointJunction City, Richland, SpinkCities sharing Zip Codes with Junction CityZip CodePrimary CitySecondary CityMore Information57025Elk PointJunction City57025Elk PointRichland57025Elk PointSpinkAdvertisements