There are 118 Billing Services in Cook County, Illinois, serving a population of 5,238,541 people in an area of 946 square miles. There is 1 Billing Service per 44,394 people, and 1 Billing Service per 8 square miles.
In Illinois, Cook County is ranked 11th of 102 counties in Billing Services per capita, and 2nd of 102 counties in Billing Services per square mile.