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. Hamilton County ranks 102nd out of 102 counties in the Prairie State for the combined amount of land currently advertised for sale. There were three properties listed as sold in Hamilton County through the Land Network Comparable Sales Program. This represented a total value of $1,675,000. Among cities in Hamilton County with farms and rural land for sale, Mc Leansboro 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.