Union County Open Houses

There are 76 real estate listings found in Union County, SD. There are 5 cities in Union County which include North Sioux City , Elk Point , Jefferson , Alcester , and Beresford . There are 5 zip codes in Union County which include 57049 , 57025 , 57038 , 57001 , and 57004 . View our Union County real estate area information to learn about the weather, local school districts, demographic data, and general information about Union County, SD. Get in touch with an Union County real estate agent who can help you find the home of your dreams in Union County. Use our mortgage calculator to see how much it would be to finance a home in Union County. Not ready to buy yet? Find and compare apartments for rent in Union County.