QuickFacts

Population per square mile in New York is

411.2

10.5%

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

12.1%

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

The population of Illinois is

12,859,995

The population of Cook County, Illinois is

5,246,456

8.1%

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

Population per square mile in Florida is

350.6

Population per square mile in Maricopa County, Arizona is

414.9

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

27,012.5

11.9%

of persons in Cook County, Illinois are 65 years and over

Source: 2010 Census

Source: Population Estimates

Source: 2010 Census