QuickFacts

30.0%

of persons 25 years+ in Maricopa County, Arizona have a bachelor's degree or higher

11.4%

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

12.1%

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

The population of California is

39,144,818

Population per square mile in Cook County, Illinois is

5,495.1

Median household income of Los Angeles city, California is

$49,682

Median household income of Chicago city, Illinois is

$47,831

Population per square mile in Illinois is

231.1

11.4%

of persons in California are 65 years and over

14.1%

of persons in Ohio are 65 years and over

Source: American Community Survey

Source: 2010 Census

Source: Population Estimates

Source: 2010 Census

Source: American Community Survey

Source: 2010 Census