QuickFacts

15.4%

of persons in Pennsylvania are 65 years and over

23.4%

of persons in San Diego County, California are under 18 years

15.4%

of persons in Pennsylvania are 65 years and over

The population of San Diego County, California is

3,299,521

35.8%

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

27.6%

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

The population of New York city, New York is

8,550,405

Population per square mile in Maricopa County, Arizona is

414.9

The population of San Diego County, California is

3,299,521

Population per square mile in Illinois is

231.1

Source: 2010 Census

Source: Population Estimates

Source: American Community Survey

Source: Population Estimates

Source: 2010 Census

Source: Population Estimates

Source: 2010 Census