Milwaukee is the most populous city in the U.S. state of Wisconsin. It is located on the western shore of Lake Michigan at the confluence of the Milwaukee, Menomonee, and Kinnickinnic Rivers. Milwaukee is the 31st-most populous city in the United States and the fifth-most populous city in the Midwest, with a population of 577,222 at the 2020 census. The Milwaukee metropolitan area has over 1.57 million residents and ranks as the 40th-largest metropolitan area in the nation. It is the county seat of Milwaukee County.