QuickFacts

Population per square mile in Maricopa County, Arizona is

414.9

Population per square mile in San Diego County, California is

735.8

27.3%

of persons in Texas are under 18 years

The population of Houston city, Texas is

2,296,224

10.3%

of persons in Texas are 65 years and over

The population of Cook County, Illinois is

5,238,216

Population per square mile in Cook County, Illinois is

5,495.1

25.4%

of persons 25 years+ in Philadelphia city, Pennsylvania have a bachelor's degree or higher

Median household income of Cook County, Illinois is

$55,251

21.3%

of persons in Florida are under 18 years

Source: 2010 Census

Source: Population Estimates

Source: 2010 Census

Source: Population Estimates

Source: 2010 Census

Source: American Community Survey

Source: 2010 Census