There are 438 Mailing Services in Cook County, Illinois, serving a population of 5,238,541 people in an area of 946 square miles. There is 1 Mailing Service per 11,960 people, and 1 Mailing Service per 2 square miles.
In Illinois, Cook County is ranked 99th of 102 counties in Mailing Services per capita, and 2nd of 102 counties in Mailing Services per square mile.