QuickFacts

Population per square mile in Philadelphia city, Pennsylvania is

11,379.5

The population of Cook County, Illinois is

5,238,216

23.7%

of persons in Cook County, Illinois are under 18 years

30.3%

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

Population per square mile in Chicago city, Illinois is

11,841.8

The population of Ohio is

11,614,373

12.1%

of persons in Maricopa County, Arizona are 65 years and over

The population of Cook County, Illinois is

5,238,216

22.5%

of persons in Philadelphia city, Pennsylvania are under 18 years

11.9%

of persons in Cook County, Illinois are 65 years and over

Source: 2010 Census

Source: Population Estimates

Source: 2010 Census

Source: American Community Survey

Source: 2010 Census

Source: Population Estimates

Source: 2010 Census

Source: Population Estimates

Source: 2010 Census