QuickFacts

11.4%

of persons in San Diego County, California are 65 years and over

23.4%

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

Population per square mile in Cook County, Illinois is

5,495.1

The population of Pennsylvania is

12,784,227

The population of Maricopa County, Arizona is

4,167,947

12.5%

of persons in Illinois are 65 years and over

Median household income of New York is

$59,269

The population of Harris County, Texas is

4,538,028

23.1%

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

Population per square mile in Ohio is

282.3

Source: 2010 Census

Source: Population Estimates

Source: 2010 Census

Source: American Community Survey

Source: Population Estimates

Source: 2010 Census