There are 109 Fast Food Restaurants in Waukesha County, Wisconsin, serving a population of 396,731 people in an area of 550 square miles. There is 1 Fast Food Restaurant per 3,639 people, and 1 Fast Food Restaurant per 5 square miles.
In Wisconsin, Waukesha County is ranked 51st of 72 counties in Fast Food Restaurants per capita, and 3rd of 72 counties in Fast Food Restaurants per square mile.