Land for sale in Grant County, Wisconsin, recently totaled approximately $42 million and around 3,000 acres. Grant County ranks 42nd in the Badger State for the combined amount of land currently advertised for sale. Among cities in Grant County with farms, hunting land and other rural land and acreage for sale, Boscobel featured the most land for sale. From an economic perspective, government and state-level services contribute most to Grant County's overall GDP. Grant County is the 15th largest county (1,183 square miles) in Wisconsin. It's located in the Southwest Wisconsin region of Wisconsin.