QuickFacts

15.4%

of persons in Pennsylvania are 65 years and over

The population of Ohio is

11,614,373

Population per square mile in Harris County, Texas is

2,402.4

25.7%

of persons in Georgia are under 18 years

13.5%

of persons in New York are 65 years and over

22.3%

of persons in New York are under 18 years

The population of Maricopa County, Arizona is

4,167,947

Population per square mile in Philadelphia city, Pennsylvania is

11,379.5

23.7%

of persons in Ohio are under 18 years

10.3%

of persons in Chicago city, Illinois are 65 years and over

Source: 2010 Census

Source: Population Estimates

Source: 2010 Census

Source: Population Estimates

Source: 2010 Census