What are the Eureka, South Dakota Zip Codes for 2020, 2019Primary Zip Codes for EurekaZip CodePrimary CitySecondary City57437EurekaEureka, Greenway, Hills, Hillsview, ArtasCities sharing Zip Codes with EurekaZip CodePrimary CitySecondary CityMore Information57437EurekaArtas57437EurekaGreenway57437EurekaHills57437EurekaHillsviewAdvertisements