QuickFacts

23.1%

of persons in Los Angeles city, California are under 18 years

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

27,012.5

11.9%

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

Median household income of Texas is

$53,207

The population of Pennsylvania is

12,784,227

Population per square mile in Illinois is

231.1

23.4%

of persons in San Diego County, California are under 18 years

The population of Maricopa County, Arizona is

4,167,947

12.1%

of persons in Philadelphia city, Pennsylvania are 65 years and over

22.5%

of persons in Philadelphia city, Pennsylvania are under 18 years

Source: 2010 Census

Source: American Community Survey

Source: Population Estimates

Source: 2010 Census

Source: Population Estimates

Source: 2010 Census