There are 389 Plumbing Services in Williamson County, Texas, serving a population of 508,313 people in an area of 1,119 square miles. There is 1 Plumbing Service per 1,306 people, and 1 Plumbing Service per 2 square miles.
In Texas, Williamson County is ranked 119th of 254 counties in Plumbing Services per capita, and 18th of 254 counties in Plumbing Services per square mile.