QuickFacts

22.5%

of persons in Philadelphia city, Pennsylvania are under 18 years

Population per square mile in Maricopa County, Arizona is

414.9

Median household income of Texas is

$53,207

10.9%

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

Population per square mile in Cook County, Illinois is

5,495.1

12.1%

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

Population per square mile in Los Angeles city, California is

8,092.3

Population per square mile in Pennsylvania is

283.9

25.7%

of persons in Georgia are under 18 years

13.8%

of persons in Michigan are 65 years and over

Source: 2010 Census

Source: American Community Survey

Source: 2010 Census