QuickFacts

23.7%

of persons in Cook County, Illinois are under 18 years

23.7%

of persons in Ohio are under 18 years

Population per square mile in New York city, New York is

27,012.5

10.3%

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

35.8%

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

24.4%

of persons in Illinois are under 18 years

11.9%

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

The population of Philadelphia city, Pennsylvania is

1,567,442

The population of New York is

19,745,289

Population per square mile in Philadelphia city, Pennsylvania is

11,379.5

Source: 2010 Census

Source: American Community Survey

Source: 2010 Census

Source: Population Estimates

Source: 2010 Census