There are 145 Fast Food Restaurants in Polk County, Iowa, serving a population of 467,235 people in an area of 574 square miles. There is 1 Fast Food Restaurant per 3,222 people, and 1 Fast Food Restaurant per 3 square miles.
In Iowa, Polk County is ranked 64th of 99 counties in Fast Food Restaurants per capita, and 1st of 99 counties in Fast Food Restaurants per square mile.