QuickFacts

Population per square mile in Pennsylvania is

283.9

28.0%

of persons in Harris County, Texas are under 18 years

Population per square mile in Harris County, Texas is

2,402.4

Population per square mile in North Carolina is

196.1

12.9%

of persons in North Carolina are 65 years and over

Population per square mile in Maricopa County, Arizona is

414.9

30.4%

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

The population of New York city, New York is

8,550,405

12.1%

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

Population per square mile in San Diego County, California is

735.8

Source: 2010 Census

Source: American Community Survey

Source: Population Estimates

Source: 2010 Census