QuickFacts

22.0%

of persons in Pennsylvania are under 18 years

10.3%

of persons in Texas are 65 years and over

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

27,012.5

Population per square mile in New York is

411.2

The population of New York city, New York is

8,550,405

Population per square mile in Maricopa County, Arizona is

414.9

23.9%

of persons in North Carolina are under 18 years

The population of Pennsylvania is

12,784,227

The population of Harris County, Texas is

4,538,028

Median household income of Cook County, Illinois is

$55,251

Source: 2010 Census

Source: Population Estimates

Source: 2010 Census

Source: Population Estimates

Source: American Community Survey