Union County, IL Undeveloped Land for Sale

Recent listings of undeveloped land for sale in Illinois's Union County total 1,000 acres and a combined market value of $709,600. The average size of undeveloped land for sale in Union County was 16 acres. Of the 102 counties in the state, Union County is 71st in terms of its size. Union County is in the Southern Illinois region. To find more land for sale in Illinois, sign up for our Illinois land-for-sale email alerts to be notified when new listings matching your search criteria come onto the market in Union County. You can also search Land And Farm to find Illinois real estate agents who specialize in selling land, rural acreage and other recreational property in regions throughout Illinois, including farmland for sale in Union County.