QuickFacts

Population per square mile in Ohio is

282.3

15.4%

of persons in Pennsylvania are 65 years and over

11.4%

of persons in California are 65 years and over

24.5%

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

21.3%

of persons in Florida are under 18 years

15.4%

of persons in Pennsylvania are 65 years and over

23.1%

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

Population per square mile in Maricopa County, Arizona is

414.9

Median household income of California is

$61,818

Median household income of Cook County, Illinois is

$55,251

Source: 2010 Census

Source: American Community Survey