A total of almost 1,000 acres were listed for sale in Illinois's Mercer County recently, representing a total value of $4 million in Mercer County farms, rural land, hunting land and other land for sale. Mercer County ranks 73rd in the Prairie State for the total number of acres of land currently advertised for sale. There were two properties listed as sold in Mercer County through the Land Network Comparable Sales Program. This represented a total value of $119,800. Of all locations in Mercer County with farms, hunting land and other rural land and acreage for sale, Aledo featured the most land for sale. Mercer County is Illinois's 44th largest county (568 square miles). It's located in the Western Illinois region of Illinois.