QuickFacts

23.1%

of persons in Chicago city, Illinois are under 18 years

Population per square mile in Ohio is

282.3

The population of Ohio is

11,614,373

Population per square mile in Philadelphia city, Pennsylvania is

11,379.5

Population per square mile in New York city, New York is

27,012.5

The population of Maricopa County, Arizona is

4,167,947

24.4%

of persons in Illinois are under 18 years

Population per square mile in Harris County, Texas is

2,402.4

25.7%

of persons in Georgia are under 18 years

Population per square mile in Houston city, Texas is

3,501.5

Source: 2010 Census

Source: Population Estimates

Source: 2010 Census

Source: Population Estimates

Source: 2010 Census