Offices in Union County

2019 President's Award
CENTURY 21 ProLink
1114 4th Street
Sioux City IA 51101
Phone: 712.224.2300
English, Spanish, Vietnamese
CENTURY 21 Advantage
101 North Phillips Ave
Sioux Falls SD 57104
Phone: 605.336.2121
CENTURY 21 ProLink
41 Central Ave NW
Le Mars IA 51031
Phone: 712.546.6833
There are 3 real estate offices found in Union County, SD. There are 5 cities in Union County which include North Sioux City , Elk Point , Jefferson , Beresford , and Alcester . There are 5 zip codes in Union County which include 57049 , 57025 , 57038 , 57004 , and 57001 . 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.