QuickFacts

Population per square mile in Maricopa County, Arizona is

414.9

Median household income of Houston city, Texas is

$46,187

10.5%

of persons in Los Angeles city, California are 65 years and over

Population per square mile in Cook County, Illinois is

5,495.1

Population per square mile in Pennsylvania is

283.9

10.9%

of persons in Los Angeles County, California are 65 years and over

The population of Cook County, Illinois is

5,238,216

12.1%

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

The population of Philadelphia city, Pennsylvania is

1,567,442

The population of Pennsylvania is

12,784,227

Source: 2010 Census

Source: American Community Survey

Source: 2010 Census

Source: Population Estimates

Source: 2010 Census

Source: Population Estimates