QuickFacts

The population of Pennsylvania is

12,784,227

The population of San Diego County, California is

3,299,521

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

27,012.5

21.3%

of persons in Florida are under 18 years

Population per square mile in Florida is

350.6

12.5%

of persons in Illinois are 65 years and over

22.5%

of persons in Philadelphia city, Pennsylvania are under 18 years

35.6%

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

22.3%

of persons in New York are under 18 years

27.3%

of persons in Texas are under 18 years

Source: Population Estimates

Source: 2010 Census

Source: American Community Survey

Source: 2010 Census