The value of all land and rural real estate for sale in Piatt County recently was nearly $7 million, representing a total of 312 acres of land for sale in Piatt County. Piatt County ranks 79th in the state for the total acreage of land currently advertised for sale. Among cities in Piatt County with farms, rural land, hunting land and other land for sale, Mansfield featured the most land for sale. Its economy is defined as agricultural, with 426 farms recorded in the county during the most recent U.S. Census. Farming activities in Piatt County generate annual revenues of $18 million, most of which is from crops. Piatt County is the 67th largest county (439 square miles) in Illinois. It's located in the Central Illinois region of the state.