What are the Saint Helena, Nebraska Zip Codes for 2020, 2019Primary Zip Codes for Saint HelenaZip CodePrimary CitySecondary City68774Saint HelenaSaint Helena, South Yankton, St HelenaCities sharing Zip Codes with Saint HelenaZip CodePrimary CitySecondary CityMore Information68774Saint HelenaSouth Yankton68774Saint HelenaSt HelenaAdvertisements