Wauwatosa

Wauwatosa (originally Wau-wau-too-sa or Hart's Mill) is a city in Milwaukee County, Wisconsin, United States. The population was 46,396 at the 2010 census. Wauwatosa is located immediately west of Milwaukee, and is a part of the Milwaukee metropolitan area. It is named after the Potawatomi Chief Wauwataesie and the Potawatomi word for firefly.