QuickFacts

23.4%

of persons in San Diego County, California are under 18 years

23.7%

of persons in Ohio are under 18 years

The population of Illinois is

12,859,995

Population per square mile in Chicago city, Illinois is

11,841.8

17.3%

of persons in Florida are 65 years and over

Population per square mile in Philadelphia city, Pennsylvania is

11,379.5

22.0%

of persons in Pennsylvania are under 18 years

The population of North Carolina is

10,042,802

33.7%

of persons 25 years+ in New York have a bachelor's degree or higher

The population of Cook County, Illinois is

5,246,456

Source: 2010 Census

Source: Population Estimates

Source: 2010 Census

Source: Population Estimates

Source: American Community Survey

Source: Population Estimates