There are 135 Billing Services in Maricopa County, Arizona, serving a population of 4,155,501 people in an area of 9,198 square miles. There is 1 Billing Service per 30,781 people, and 1 Billing Service per 68 square miles.
In Arizona, Maricopa County is ranked 4th of 15 counties in Billing Services per capita, and 1st of 15 counties in Billing Services per square mile.