What are the Earth Resources Obs, South Dakota Zip Codes for 2020, 2019Primary Zip Codes for Earth Resources ObsZip CodePrimary CitySecondary City57198Sioux FallsEarth Resources ObsCities sharing Zip Codes with Earth Resources ObsZip CodePrimary CitySecondary CityMore Information57198Sioux FallsEarth Resources ObsAdvertisements