QuickFacts

11.4%

of persons in San Diego County, California are 65 years and over

26.4%

of persons in Maricopa County, Arizona are under 18 years

Median household income of Philadelphia city, Pennsylvania is

$38,253

The population of Illinois is

12,801,539

32.3%

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

The population of New York city, New York is

8,550,405

12.1%

of persons in New York city, New York are 65 years and over

Population per square mile in Cook County, Illinois is

5,495.1

13.5%

of persons in New York are 65 years and over

21.3%

of persons in Florida are under 18 years

Source: 2010 Census

Source: American Community Survey

Source: Population Estimates

Source: American Community Survey

Source: Population Estimates

Source: 2010 Census