McLeansboro is the county seat of Hamilton County, a mostly agricultural region comprising cornfields and small Midwestern farming communities. This often-overlooked area of southern Illinois is also home to a few surprising attractions, including the country's largest archaeological site,?Cahokia Mounds State Historic Site, over 100 wineries and outdoor recreation like bouldering and mountain biking in 280,000-acre Shawnee National Forest. There was a combined almost $2 million of land and rural real estate for sale in Illinois's Hamilton County recently on Land.com. The total acreage of all Hamilton County farms, hunting land and other rural land and acreage for sale was approximately 1,000 acres. Hamilton County ranks 100th out of 102 counties in the Land of Lincoln for the total number of acres of land currently advertised for sale. Of all land and rural real estate for sale in Hamilton County, Mcleansboro had the most land for sale. Its economy is defined as agricultural, with 695 farms recorded in the county during the most recent U.S. Census. Farming activities in Hamilton County generate annual revenues of $11 million, most of which is from crops. Hamilton County is the 68th biggest county (435 square miles) in Illinois. It's located in the Southern Illinois region of the state.