Union County is in Southern Illinois. Of the 102 counties in the Prairie State, Union County is 71st in terms of its size (422 square miles). Union County, Illinois, includes roughly 1,000 acres of commercial land and property for sale based on recent Land Network data. The combined market value of farmsand rural real estate for sale here was $2 million. The average price of commercial acreage for sale in Union County was $1 million. Some suggested uses for commercial property currently for sale in Union County include for commercial, hunting/fishing, and agriculture use. Some common wildlife species to be found on undeveloped land for sale in Union County include whitetail deer, turkey, deer, dove, quail and ducks. Current commercial applications for commercial property for sale in Union County include for commercial, hunting/fishing and agriculture use. Browse all Illinois commercial land and property for sale on the Land Network to find your next commercial property or land investment.