The value of all farms and rural land for sale in Fond du Lac County, Wisconsin, recently was almost $68 million, representing a combined 1,106 acres of land for sale in Fond du Lac County. Fond du Lac County ranks 14th out of 72 counties in the state for the total number of acres of land currently advertised for sale. Of all land and rural real estate for sale in Fond du Lac County, Fond Du Lac featured the most land for sale. Manufacturing and related services are the largest economic sectors in Fond du Lac County. Fond du Lac County is Wisconsin's 44th largest county (765 square miles). It's located in the Northeast Wisconsin region of the state.