A total of 1,000 acres were listed for sale in Putnam County recently, representing a total value of approximately $500,000 in Putnam County farms and rural land for sale. Putnam County ranks 98th in the Prairie State for the total acreage of land currently advertised for sale. Of all locations in Putnam County with farms, rural land, hunting land and other land for sale, Putnam featured the most land for sale. Putnam County is Illinois's 102nd largest county (172 square miles). It's located in the Western Illinois region of the state.