There are 109 Fast Food Restaurants in St. Tammany Parish, Louisiana, serving a population of 249,201 people in an area of 846 square miles. There is 1 Fast Food Restaurant per 2,286 people, and 1 Fast Food Restaurant per 7 square miles.
In Louisiana, St. Tammany Parish is ranked 27th of 64 parishes in Fast Food Restaurants per capita, and 6th of 64 parishes in Fast Food Restaurants per square mile.