QuickFacts

10.9%

of persons in Los Angeles County, California are 65 years and over

15.4%

of persons in Pennsylvania are 65 years and over

22.5%

of persons in Philadelphia city, Pennsylvania are under 18 years

22.0%

of persons in Pennsylvania are under 18 years

The population of Cook County, Illinois is

5,238,216

Population per square mile in Pennsylvania is

283.9

Population per square mile in Illinois is

231.1

35.7%

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

The population of Philadelphia city, Pennsylvania is

1,567,442

8.1%

of persons in Harris County, Texas are 65 years and over

Source: 2010 Census

Source: Population Estimates

Source: 2010 Census

Source: American Community Survey

Source: Population Estimates

Source: 2010 Census