QuickFacts

11.9%

of persons in Cook County, Illinois are 65 years and over

Population per square mile in Illinois is

231.1

10.5%

of persons in Los Angeles city, California are 65 years and over

The population of Pennsylvania is

12,784,227

23.9%

of persons in North Carolina are under 18 years

21.3%

of persons in Florida are under 18 years

25.7%

of persons in Georgia are under 18 years

12.1%

of persons in New York city, New York are 65 years and over

23.7%

of persons in Michigan are under 18 years

26.4%

of persons in Maricopa County, Arizona are under 18 years

Source: 2010 Census

Source: Population Estimates

Source: 2010 Census