QuickFacts

23.1%

of persons in Chicago city, Illinois are under 18 years

Population per square mile in Cook County, Illinois is

5,495.1

Population per square mile in Philadelphia city, Pennsylvania is

11,379.5

11.9%

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

23.9%

of persons in North Carolina are under 18 years

In California

57.2%

of females 16 years+ are in the civilian labor force

Population per square mile in Los Angeles County, California is

2,419.6

11.4%

of persons in California are 65 years and over

22.3%

of persons in New York are under 18 years

Population per square mile in Ohio is

282.3

Source: 2010 Census

Source: American Community Survey

Source: 2010 Census