There was a combined approximately $2 million of farms, rural land, hunting land and other land for sale in Cass County, Illinois, recently on Land.com. The total of all Cass County farms, hunting land and other rural land and acreage for sale was nearly 1,000 acres. Cass County ranks 84th in the state for the combined amount of land currently advertised for sale. Among cities in Cass County with land and rural real estate for sale, Virginia had the most land for sale. Manufacturing and related services are the largest economic sectors in Cass County. Cass County is the 78th biggest county (383 square miles) in Illinois. It's located in the Western Illinois region of Illinois.