There are 166 Plumbing Services in Frederick County, Maryland, serving a population of 246,105 people in an area of 661 square miles. There is 1 Plumbing Service per 1,482 people, and 1 Plumbing Service per 3 square miles.
In Maryland, Frederick County is ranked 3rd of 24 counties in Plumbing Services per capita, and 9th of 24 counties in Plumbing Services per square mile.