QuickFacts

The population of Maricopa County, Arizona is

4,167,947

10.3%

of persons in Texas are 65 years and over

The population of Chicago city, Illinois is

2,720,546

24.5%

of persons in Los Angeles County, California are under 18 years

Population per square mile in Cook County, Illinois is

5,495.1

11.9%

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

Population per square mile in New York is

411.2

13.8%

of persons in Michigan are 65 years and over

The population of Philadelphia city, Pennsylvania is

1,567,442

The population of Philadelphia city, Pennsylvania is

1,567,442

Source: Population Estimates

Source: 2010 Census

Source: Population Estimates

Source: 2010 Census

Source: Population Estimates