There are 115 Plumbing Services in Johnston County, North Carolina, serving a population of 186,308 people in an area of 791 square miles. There is 1 Plumbing Service per 1,620 people, and 1 Plumbing Service per 6 square miles.
In North Carolina, Johnston County is ranked 70th of 100 counties in Plumbing Services per capita, and 35th of 100 counties in Plumbing Services per square mile.