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 value of all land and rural real estate for sale in Hamilton County recently was nearly $2 million, representing a combined 171 acres of land for sale in Hamilton County. Hamilton County ranks 96th out of 102 counties in Illinois for the total number of acres of land currently advertised for sale. Among cities in Hamilton County with land and rural real estate for sale, Broughton featured the most land for sale. Agriculture and farming drives the Hamilton County economy, with 695 farms recorded in the county during the U.S. Census in 2012. 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 Illinois.