Mercer County is in Western Illinois. Of the 102 counties in the Inland Empire, 568-square-mile Mercer County ranks 44th by size. There is around 1,000 acres of recreational land for sale in Mercer County, Illinois, based on recent Land Network data. The combined market value of farms, rural land, hunting land and other land for sale here is about $3 million. The average price of recreational property for sale in Mercer County was $861,333. Browse all recreational property for sale in Illinois to find the recreational tract that suits your lifestyle needs, from hunting and fishing properties for the outdoor enthusiast to undeveloped acreage ready for future residential-property development.