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. The combined value of land and rural real estate for sale in Illinois's Hamilton County recently on Land.com was $2 million. This represents nearly 1,000 acres of farms, hunting land and other rural land and acreage for sale in Hamilton County. Hamilton County ranks 96th out of 102 counties in the Inland Empire for the combined amount of land currently advertised for sale. Among cities in Hamilton County with farms and rural land for sale, Broughton had the most land for sale. Hamilton County has a large agricultural economy, with 695 farms recorded in the county during the latest 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.