There are 284 Fast Food Restaurants in San Joaquin County, California, serving a population of 724,153 people in an area of 1,392 square miles. There is 1 Fast Food Restaurant per 2,549 people, and 1 Fast Food Restaurant per 4 square miles.
In California, San Joaquin County is ranked 26th of 58 counties in Fast Food Restaurants per capita, and 12th of 58 counties in Fast Food Restaurants per square mile.