QuickFacts

Population per square mile in Maricopa County, Arizona is

414.9

Population per square mile in Ohio is

282.3

The population of Cook County, Illinois is

5,246,456

22.5%

of persons in Philadelphia city, Pennsylvania are under 18 years

Median household income of Pennsylvania is

$53,115

31.0%

of persons 25 years+ in California have a bachelor's degree or higher

The population of Houston city, Texas is

2,239,558

26.4%

of persons in Maricopa County, Arizona are under 18 years

The population of San Diego County, California is

3,263,431

Population per square mile in Cook County, Illinois is

5,495.1

Source: 2010 Census

Source: Population Estimates

Source: 2010 Census

Source: American Community Survey

Source: Population Estimates

Source: 2010 Census

Source: Population Estimates

Source: 2010 Census