QuickFacts

The population of Cook County, Illinois is

5,238,216

32.0%

of persons 25 years+ in Los Angeles city, California have a bachelor's degree or higher

22.5%

of persons in Philadelphia city, Pennsylvania are under 18 years

25.4%

of persons 25 years+ in Philadelphia city, Pennsylvania have a bachelor's degree or higher

Population per square mile in Pennsylvania is

283.9

Population per square mile in Cook County, Illinois is

5,495.1

Population per square mile in Ohio is

282.3

Population per square mile in Michigan is

174.8

11.4%

of persons in California are 65 years and over

23.1%

of persons in Chicago city, Illinois are under 18 years

Source: Population Estimates

Source: American Community Survey

Source: 2010 Census

Source: American Community Survey

Source: 2010 Census