There are 105 Fast Food Restaurants in Boulder County, Colorado, serving a population of 316,782 people in an area of 727 square miles. There is 1 Fast Food Restaurant per 3,016 people, and 1 Fast Food Restaurant per 6 square miles.
In Colorado, Boulder County is ranked 37th of 64 counties in Fast Food Restaurants per capita, and 5th of 64 counties in Fast Food Restaurants per square mile.