There are 349 Plumbing Services in Marin County, California, serving a population of 260,814 people in an area of 521 square miles. There is 1 Plumbing Service per 747 people, and 1 Plumbing Service per 1 square miles.
In California, Marin County is ranked 5th of 58 counties in Plumbing Services per capita, and 9th of 58 counties in Plumbing Services per square mile.