There was a combined $3 million of farms, rural land, hunting land and other land for sale in Illinois's Gallatin County recently on Land.com. The total size of all Gallatin County farms, hunting land and other rural land and acreage for sale was 1,000 acres. Gallatin County ranks 91st out of 102 counties in Illinois for the combined amount of land currently advertised for sale. Of all farms, hunting land and other rural land and acreage for sale in Gallatin County, Omaha featured the most land for sale. Gallatin County is the 88th biggest county (328 square miles) in Illinois. It's located in the Southern Illinois region of Illinois.