The value of all farms, rural land, hunting land and other land for sale in Illinois's Randolph County recently was almost $11 million, representing a total of 207 acres of land for sale in Randolph County. Randolph County ranks 50th out of 102 counties in the Prairie State for the total number of acres of land currently advertised for sale. Of all farms and rural land for sale in Randolph County, Chester had 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.