Williamson County Open Houses

There are 221 real estate listings found in Williamson County, IL. There are 11 cities in Williamson County which include Marion , Carterville , Pittsburg , Creal Springs , and Herrin . There are 11 zip codes in Williamson County which include 62959 , 62918 , 62922 , 62948 , and 62921 . View our Williamson County real estate area information to learn about the weather, local school districts, demographic data, and general information about Williamson County, IL. Get in touch with a Williamson County real estate agent who can help you find the home of your dreams in Williamson County. Use our mortgage calculator to see how much it would be to finance a home in Williamson County. Not ready to buy yet? Find and compare apartments for rent in Williamson County.