QuickFacts

8.1%

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

10.3%

of persons in Chicago city, Illinois are 65 years and over

The population of San Diego County, California is

3,299,521

Population per square mile in Illinois is

231.1

12.1%

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

The population of California is

39,250,017

10.5%

of persons in Los Angeles city, California are 65 years and over

13.8%

of persons in Michigan are 65 years and over

12.1%

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

The population of Cook County, Illinois is

5,238,216

Source: 2010 Census

Source: Population Estimates

Source: 2010 Census

Source: Population Estimates

Source: 2010 Census

Source: Population Estimates