QuickFacts

The population of Illinois is

12,801,539

Population per square mile in Pennsylvania is

283.9

8.1%

of persons in Harris County, Texas are 65 years and over

Population per square mile in Ohio is

282.3

Median household income of Maricopa County, Arizona is

$54,229

Population per square mile in Ohio is

282.3

Median household income of Philadelphia city, Pennsylvania is

$38,253

Population per square mile in Pennsylvania is

283.9

25.0%

of persons in California are under 18 years

Population per square mile in New York is

411.2

Source: Population Estimates

Source: 2010 Census

Source: American Community Survey

Source: 2010 Census

Source: American Community Survey

Source: 2010 Census