There was a total of around $8 million of land and rural real estate for sale in Piatt County, Illinois, recently on Land.com. The total acreage of all Piatt County farms and rural real estate for sale was 1,000 acres. Piatt County ranks 76th in the state for the combined amount of land currently advertised for sale. Among cities in Piatt County with farms, hunting land and other rural land and acreage for sale, Mansfield had the most land for sale. Piatt County has a large agricultural economy, with 426 farms recorded in the county during the latest U.S. Census. Farming activities in Piatt County generate annual revenues of $18 million, most of which is from crops. Piatt County is Illinois's 67th largest county (439 square miles). It's located in the Central Illinois region of the state.