There are 101 Fast Food Restaurants in Washington County, Utah, serving a population of 155,577 people in an area of 2,427 square miles. There is 1 Fast Food Restaurant per 1,540 people, and 1 Fast Food Restaurant per 24 square miles.
In Utah, Washington County is ranked 13th of 29 counties in Fast Food Restaurants per capita, and 5th of 29 counties in Fast Food Restaurants per square mile.