There was a combined $11 million of land for sale in Randolph County recently on Land.com. The total size of all Randolph County farms and rural real estate for sale was nearly 1,000 acres. Randolph County ranks 51st in the Land of Lincoln for the total number of acres of land currently advertised for sale. Of all locations in Randolph County with farms, hunting land and other rural land and acreage for sale, Sparta had the most land for sale. From an economic perspective, manufacturing and related services are the main sectors in Randolph County. Randolph County is the 38th biggest county (596 square miles) in Illinois. It's located in the Southwest Illinois region of Illinois.