The combined value of farms, hunting land and other rural land and acreage for sale in Sanilac County, Michigan, recently on Land.com was almost $35 million. This represents around 1,000 acres of farms and rural real estate for sale in Sanilac County. Sanilac County ranks 62nd in the Great Lakes State for the total acreage of land currently advertised for sale. Of all locations in Sanilac County with farms, rural land, hunting land and other land for sale, Lexington had the most land for sale. Sanilac County is Michigan's 18th biggest county (1,589 square miles). It's located in the East Central Michigan region of the state.