QuickFacts

The population of Maricopa County, Arizona is

4,167,947

The population of Chicago city, Illinois is

2,720,546

The population of Cook County, Illinois is

5,238,216

10.5%

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

Population per square mile in Philadelphia city, Pennsylvania is

11,379.5

10.7%

of persons in Georgia are 65 years and over

25.9%

of persons in Houston city, Texas are under 18 years

The population of Texas is

27,862,596

The population of Georgia is

10,310,371

The population of Illinois is

12,801,539

Source: Population Estimates

Source: 2010 Census

Source: Population Estimates