There are 142 Gas Stations in St. Louis County, Missouri, serving a population of 999,539 people in an area of 508 square miles. There is 1 Gas Station per 7,039 people, and 1 Gas Station per 3 square miles.
In Missouri, St. Louis County is ranked 113rd of 115 counties in Gas Stations per capita, and 4th of 115 counties in Gas Stations per square mile.