There are 102 Fast Food Restaurants in Loudoun County, Virginia, serving a population of 374,558 people in an area of 516 square miles. There is 1 Fast Food Restaurant per 3,672 people, and 1 Fast Food Restaurant per 5 square miles.
In Virginia, Loudoun County is ranked 67th of 133 counties in Fast Food Restaurants per capita, and 19th of 133 counties in Fast Food Restaurants per square mile.