Clay County is in Southern Illinois. Of the 102 counties in the state, Clay County is 60th in terms of its size (469 square miles). Recent listings of undeveloped land for sale in Illinois's Clay County totals about 3,000 acres and a combined market value of almost $12 million. The most common type of land for sale by combined acreage in Clay County is house. The average price of undeveloped acreage for sale in Clay County was $3 million. Some suggested uses for undeveloped land currently for sale in Clay County include for commercial, hunting/fishing, and agriculture use. Some common wildlife species to be found on undeveloped land for sale in Clay County include whitetail deer, turkey, deer, dove and ducks. Current commercial applications for commercial property for sale in Clay County include for commercial, hunting/fishing and agriculture use. Browse all Illinois undeveloped acreage for sale on the Land Network to find your next commercial property or land investment.