QuickFacts

12.5%

of persons in Illinois are 65 years and over

22.3%

of persons in New York are under 18 years

In Maricopa County, Arizona

57.3%

of females 16 years+ are in the civilian labor force

Population per square mile in Philadelphia city, Pennsylvania is

11,379.5

Population per square mile in Illinois is

231.1

Population per square mile in Ohio is

282.3

26.4%

of persons in Maricopa County, Arizona are under 18 years

21.6%

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

Population per square mile in Philadelphia city, Pennsylvania is

11,379.5

22.0%

of persons in Pennsylvania are under 18 years

Source: 2010 Census

Source: American Community Survey

Source: 2010 Census