There are 420 Fast Food Restaurants in DuPage County, Illinois, serving a population of 931,826 people in an area of 328 square miles. There is 1 Fast Food Restaurant per 2,218 people, and 1 Fast Food Restaurant per square mile.
In Illinois, DuPage County is ranked 26th of 102 counties in Fast Food Restaurants per capita, and 2nd of 102 counties in Fast Food Restaurants per square mile.