McDonough County is in Western Illinois. Of the 102 counties in the Land of Lincoln, McDonough County ranks 39th in terms of size (377,718 acres). There is 1,000 acres of residential land and property for sale in McDonough County, Illinois, based on recent Land Network data. The combined market value of farmsand rural real estate for sale here is roughly $3 million. The average price of residential acreage for sale in McDonough County was $327,940. Browse all residential land and rural property for sale in Illinois to find residential land and properties that suit your lifestyle needs, from existing residential homes and estates to land ready for future residential-property development.