QuickFacts

15.4%

of persons in Pennsylvania are 65 years and over

Population per square mile in California is

239.1

The population of Cook County, Illinois is

5,238,216

14.1%

of persons in Ohio are 65 years and over

10.7%

of persons in Georgia are 65 years and over

The population of Illinois is

12,801,539

The population of Harris County, Texas is

4,538,028

34.2%

of persons 25 years+ in New York have a bachelor's degree or higher

Population per square mile in New York city, New York is

27,012.5

23.4%

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

Source: 2010 Census

Source: Population Estimates

Source: 2010 Census

Source: Population Estimates

Source: American Community Survey

Source: 2010 Census