QuickFacts

23.7%

of persons in Cook County, Illinois are under 18 years

Population per square mile in New York is

411.2

Population per square mile in Maricopa County, Arizona is

414.9

Median household income of Philadelphia city, Pennsylvania is

$38,253

The population of Maricopa County, Arizona is

4,167,947

The population of North Carolina is

10,146,788

10.5%

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

26.4%

of persons in Maricopa County, Arizona are under 18 years

Population per square mile in Maricopa County, Arizona is

414.9

The population of New York city, New York is

8,550,405

Source: 2010 Census

Source: American Community Survey

Source: Population Estimates

Source: 2010 Census

Source: Population Estimates