Waukesha is a city in and the county seat of Waukesha County, Wisconsin, in the Upper Midwest region of the United States. The population was 70,718 at the 2010 census, making it the largest community in the county and 7th largest in the state. The city is located adjacent to the Town of Waukesha. Milwaukee County is due east of Waukesha County. In 2012 Gibson Guitar Corporation designated Waukesha for their next nationally acclaimed “GuitarTown” arts project.