There are 216 Mass Media Companies in Cook County, Illinois, serving a population of 5,238,541 people in an area of 946 square miles. There is 1 Mass Media Company per 24,252 people, and 1 Mass Media Company per 4 square miles.
In Illinois, Cook County is ranked 13th of 102 counties in Mass Media Companies per capita, and 1st of 102 counties in Mass Media Companies per square mile.