There are 183 Plumbing Services in District of Columbia , District of Columbia, serving a population of 672,391 people in an area of 62 square miles. There is 1 Plumbing Service per 3,674 people, and 1 Plumbing Service per square mile.
In District of Columbia, District of Columbia is ranked 1st of 1 counties in Plumbing Services per capita, and 1st of 1 counties in Plumbing Services per square mile.