Williamson County is in Southern Illinois. Of the 102 counties in the Prairie State, 444-square-mile Williamson County ranks 65th by size. Recent listings of commercial land and property for sale in Williamson County, Illinois, totals nearly 1,000 acres and a combined market value of roughly $17 million. The most common type of land for sale by combined acreage in Williamson County is house. The average price of commercial land and property for sale in Williamson County was $1 million. Some suggested uses for commercial property currently for sale in Williamson County include for hunting/fishing, commercial, and agriculture use. Some common wildlife species to be found on undeveloped land for sale in Williamson County include whitetail deer, turkey, deer, dove and ducks. Current commercial applications for commercial property for sale in Williamson County include for hunting/fishing, commercial and agriculture use. Browse all Illinois commercial acreage for sale on the Land Network to find your next commercial property or land investment.