The state of Wisconsin is one of the fifty U.S. states. Located in the north-central United States, Wisconsin is considered part of the Midwest. It is bordered by Minnesota to the west, Iowa to the southwest, Illinois to the south, Lake Michigan to the east, Upper Michigan to the northeast, and Lake Superior to the north. Wisconsin's capital is Madison, and its largest city is Milwaukee. As of 2008 the state has an estimated 5.6 million residents.