QuickFacts

23.4%

of persons in San Diego County, California are under 18 years

12.1%

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

23.7%

of persons in Ohio are under 18 years

Population per square mile in North Carolina is

196.1

Population per square mile in San Diego County, California is

735.8

Population per square mile in Pennsylvania is

283.9

The population of New York is

19,795,791

Population per square mile in Maricopa County, Arizona is

414.9

25.9%

of persons in Houston city, Texas are under 18 years

Median household income of Florida is

$47,212

Source: 2010 Census

Source: Population Estimates

Source: 2010 Census

Source: American Community Survey