The total value of land for sale in Illinois's Randolph County recently on Land.com was nearly $14 million. This represents nearly 1,000 acres of farms and rural real estate for sale in Randolph County. Randolph County ranks 38th out of 102 counties in the Inland Empire for the combined amount of land currently advertised for sale. Of all locations in Randolph County with land and rural real estate for sale, Chester featured the most land for sale. Manufacturing and related services are the largest economic sectors in Randolph County. Randolph County is Illinois's 38th largest county (596 square miles). It's located in the Southwest Illinois region of Illinois.