Summit Lake, Wisconsin
Summit Lake is an unincorporated census-designated place located in Langlade County, Wisconsin, United States. Summit Lake is located along U.S. Route 45 north of Antigo, in the town of Upham. Summit Lake has a post office with ZIP code 54485. As of the 2010 census, its population is 144.History
A post office called Summit Lake has been in operation since 1882. The community took its name from nearby Summit Lake.
