Gallatin County is in Southern Illinois. Of the 102 counties in the Land of Lincoln, Gallatin County ranks 88th in terms of size (328 square miles). Gallatin County, Illinois, has roughly 1,000 acres of residential land and property for sale based on recent Land Network data. The combined market value of farms, rural land, hunting land and other land for sale here was around $600,000. The average price of residential acreage for sale in Gallatin County was $174,166. 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.