There are 145 Key Stores in Cook County, Illinois, serving a population of 5,238,541 people in an area of 946 square miles. There is 1 Key Store per 36,127 people, and 1 Key Store per 6 square miles.
In Illinois, Cook County is ranked 6th of 102 counties in Key Stores per capita, and 1st of 102 counties in Key Stores per square mile.