QuickFacts

The population of Illinois is

12,801,539

The population of Harris County, Texas is

4,538,028

The population of Cook County, Illinois is

5,238,216

24.4%

of persons in Illinois are under 18 years

32.3%

of persons 25 years+ in Illinois have a bachelor's degree or higher

Population per square mile in Los Angeles city, California is

8,092.3

Population per square mile in Florida is

350.6

30.4%

of persons 25 years+ in Maricopa County, Arizona have a bachelor's degree or higher

The population of Pennsylvania is

12,784,227

10.3%

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

Source: Population Estimates

Source: 2010 Census

Source: American Community Survey

Source: 2010 Census

Source: American Community Survey

Source: Population Estimates

Source: 2010 Census