Sheboygan is a city in Sheboygan County, Wisconsin, United States, and its county seat. The population was 49,929 at the 2020 census, while the Sheboygan metropolitan area had 118,034 residents. The city is located on the western shore of Lake Michigan at the mouth of the Sheboygan River, about 50 miles north of Milwaukee and 64 miles south of Green Bay.