There are 266 Plumbing Services in St. Louis County, Missouri, serving a population of 999,539 people in an area of 508 square miles. There is 1 Plumbing Service per 3,757 people, and 1 Plumbing Service per 1 square miles.
In Missouri, St. Louis County is ranked 77th of 115 counties in Plumbing Services per capita, and 4th of 115 counties in Plumbing Services per square mile.