Waukesha is a city in and the county seat of Waukesha County, Wisconsin, United States. It is part of the Milwaukee metropolitan area. Its population was 70,718 at the 2010 census. The city is adjacent to the Village of Waukesha. I-94, U.S. 18, WIS-59, WIS-164, and WIS-318 creates a beltway bypass around Downtown Waukesha.

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