QuickFacts

23.7%

of persons in Cook County, Illinois are under 18 years

10.9%

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

15.4%

of persons in Pennsylvania are 65 years and over

The population of Ohio is

11,614,373

Population per square mile in Los Angeles city, California is

8,092.3

13.8%

of persons in Michigan are 65 years and over

24.4%

of persons in Illinois are under 18 years

12.9%

of persons in North Carolina are 65 years and over

21.6%

of persons in New York city, New York are under 18 years

The population of Philadelphia city, Pennsylvania is

1,567,442

Source: 2010 Census

Source: Population Estimates

Source: 2010 Census

Source: Population Estimates