QuickFacts

The population of Pennsylvania is

12,784,227

Population per square mile in Harris County, Texas is

2,402.4

13.5%

of persons in New York are 65 years and over

Population per square mile in Pennsylvania is

283.9

13.8%

of persons in Michigan are 65 years and over

The population of Michigan is

9,928,300

17.3%

of persons in Florida are 65 years and over

23.9%

of persons in North Carolina are under 18 years

26.4%

of persons in Maricopa County, Arizona are under 18 years

Population per square mile in Georgia is

168.4

Source: Population Estimates

Source: 2010 Census

Source: Population Estimates

Source: 2010 Census