There are 8 real estate agents found in South Union, KY. View our South Union real estate area information to learn about the weather, local school districts, demographic data, and general information about South Union, KY. Get in touch with a South Union real estate agent who can help you find the home of your dreams in South Union. Use our mortgage calculator to see how much it would be to finance a home in South Union. Not ready to buy yet? Find and compare apartments for rent in South Union.