There was a combined around $25 million of farms, hunting land and other rural land and acreage for sale in Randolph County recently on Land.com. The total size of all Randolph County land for sale was approximately 1,000 acres. Randolph County ranks 37th in Illinois for the combined amount of land currently advertised for sale. Of all locations in Randolph County with farms, hunting land and other rural land and acreage for sale, Chester 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 the state.