There are 195 Fast Food Restaurants in Mercer County, New Jersey, serving a population of 373,362 people in an area of 225 square miles. There is 1 Fast Food Restaurant per 1,914 people, and 1 Fast Food Restaurant per 1 square miles.
In New Jersey, Mercer County is ranked 6th of 21 counties in Fast Food Restaurants per capita, and 8th of 21 counties in Fast Food Restaurants per square mile.