Mole Lake, WisconsinMole Lake is a census-designated place located in the town of Nashville in Forest County, Wisconsin, United States. The population was 535 at the 2020 census, up from 435 at the 2010 census.DescriptionThe community is located on Wisconsin Highway 55 in the Mole Lake Indian Reservation. As of the 2010 census, its population is 435. Mole Lake has an area of ; of this is land, and is water. It is named after the Mole Lake tribe. The tribe's Mole Lake Casino is located in the community.