QuickFacts

The population of Cook County, Illinois is

5,238,216

10.3%

of persons in Chicago city, Illinois are 65 years and over

17.3%

of persons in Florida are 65 years and over

25.9%

of persons in Houston city, Texas are under 18 years

11.4%

of persons in San Diego County, California are 65 years and over

23.1%

of persons in Chicago city, Illinois are under 18 years

23.7%

of persons in Cook County, Illinois are under 18 years

23.7%

of persons in Cook County, Illinois are under 18 years

Population per square mile in Michigan is

174.8

10.3%

of persons in Texas are 65 years and over

Source: Population Estimates

Source: 2010 Census