QuickFacts

Population per square mile in Houston city, Texas is

3,501.5

12.1%

of persons in Maricopa County, Arizona are 65 years and over

12.1%

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

Median household income of Philadelphia city, Pennsylvania is

$38,253

The population of San Diego County, California is

3,299,521

15.4%

of persons in Pennsylvania are 65 years and over

24.5%

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

Population per square mile in Cook County, Illinois is

5,495.1

Median household income of Houston city, Texas is

$46,187

21.3%

of persons in Florida are under 18 years

Source: 2010 Census

Source: American Community Survey

Source: Population Estimates

Source: 2010 Census

Source: American Community Survey

Source: 2010 Census