QuickFacts

12.1%

of persons in Philadelphia city, Pennsylvania are 65 years and over

12.1%

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

Population per square mile in Philadelphia city, Pennsylvania is

11,379.5

Population per square mile in New York is

411.2

The population of Pennsylvania is

12,784,227

The population of California is

39,250,017

23.7%

of persons in Cook County, Illinois are under 18 years

26.1%

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

11.9%

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

Population per square mile in Philadelphia city, Pennsylvania is

11,379.5

Source: 2010 Census

Source: Population Estimates

Source: 2010 Census

Source: American Community Survey

Source: 2010 Census