There are 543 Fast Food Restaurants in Multnomah County, Oregon, serving a population of 788,459 people in an area of 431 square miles. There is 1 Fast Food Restaurant per 1,452 people, and 1 Fast Food Restaurant per square mile.
In Oregon, Multnomah County is ranked 8th of 36 counties in Fast Food Restaurants per capita, and 1st of 36 counties in Fast Food Restaurants per square mile.