Mukwonago is a village in the U.S. state of Wisconsin. The population was 7,355 at the 2010 census. The village is located mostly within the Town of Mukwonago in Waukesha County, with a small portion extending into the Town of East Troy in Walworth County. Of its population, 7,254 were in Waukesha County, and 101 were in Walworth County.