There was a combined approximately $4 million of farms, hunting land and other rural land and acreage for sale in Washington County recently on Land.com. The total of all Washington County land for sale was nearly 1,000 acres. Washington County ranks 74th out of 102 counties in the Land of Lincoln for the total acreage of land currently advertised for sale. Among cities in Washington County with farms, hunting land and other rural land and acreage for sale, Nashville featured the most land for sale. Washington County is the 46th biggest county (563 square miles) in Illinois. It's located in the Southern Illinois region of Illinois.