QuickFacts

13.8%

of persons in Michigan are 65 years and over

12.1%

of persons in Maricopa County, Arizona are 65 years and over

Population per square mile in California is

239.1

The population of Illinois is

12,859,995

The population of Chicago city, Illinois is

2,722,389

23.9%

of persons in North Carolina are under 18 years

15.4%

of persons in Pennsylvania are 65 years and over

Population per square mile in San Diego County, California is

735.8

The population of North Carolina is

10,042,802

Population per square mile in Ohio is

282.3

Source: 2010 Census

Source: Population Estimates

Source: 2010 Census

Source: Population Estimates

Source: 2010 Census