QuickFacts

10.9%

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

8.1%

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

Population per square mile in California is

239.1

12.1%

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

The population of Texas is

27,862,596

13.8%

of persons in Michigan are 65 years and over

23.1%

of persons in Chicago city, Illinois are under 18 years

Population per square mile in Maricopa County, Arizona is

414.9

12.1%

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

Population per square mile in Houston city, Texas is

3,501.5

Source: 2010 Census

Source: Population Estimates

Source: 2010 Census