There was a combined almost $5 million of farmsand rural real estate for sale in DeWitt County, Illinois, recently on Land.com. The total size of all DeWitt County farms and rural real estate for sale was around 1,000 acres. DeWitt County ranks 81st in the Prairie State for the total number of acres of land currently advertised for sale. Of all land and rural real estate for sale in DeWitt County, Farmer City had the most land for sale. DeWitt County is the 73rd biggest county (405 square miles) in Illinois. It's located in the Central Illinois region of Illinois.