Butte des Morts is an unincorporated census-designated place in the town of Winneconne and Oshkosh, in Winnebago County, Wisconsin, United States. As of the 2010 census, its population was 962. The community is located at the north side of Lake Butte des Morts on the former route of Wisconsin Highway 110. The name means "hill of the dead" in French. Butte des Morts uses the ZIP code 54927.