There are 242 Plumbing Services in Rockingham County, New Hampshire, serving a population of 302,479 people in an area of 695 square miles. There is 1 Plumbing Service per 1,249 people, and 1 Plumbing Service per 2 square miles.
In New Hampshire, Rockingham County is ranked 4th of 10 counties in Plumbing Services per capita, and 1st of 10 counties in Plumbing Services per square mile.