There are 493 Plumbing Services in Multnomah County, Oregon, serving a population of 788,459 people in an area of 431 square miles. There is 1 Plumbing Service per 1,599 people, and 1 Plumbing Service per square mile.
In Oregon, Multnomah County is ranked 20th of 36 counties in Plumbing Services per capita, and 1st of 36 counties in Plumbing Services per square mile.