QuickFacts

The population of Pennsylvania is

12,784,227

15.4%

of persons in Pennsylvania are 65 years and over

22.3%

of persons in New York are under 18 years

The population of Ohio is

11,614,373

Population per square mile in New York is

411.2

27.3%

of persons in Texas are under 18 years

24.5%

of persons in Los Angeles County, California are under 18 years

23.7%

of persons in Ohio are under 18 years

25.0%

of persons in California are under 18 years

The population of San Diego County, California is

3,299,521

Source: Population Estimates

Source: 2010 Census

Source: Population Estimates

Source: 2010 Census

Source: Population Estimates