QuickFacts

Population per square mile in San Diego County, California is

735.8

Population per square mile in Illinois is

231.1

The population of Chicago city, Illinois is

2,720,546

13.5%

of persons in New York are 65 years and over

The population of Texas is

27,862,596

22.5%

of persons in Philadelphia city, Pennsylvania are under 18 years

24.4%

of persons in Illinois are under 18 years

12.1%

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

35.8%

of persons 25 years+ in Cook County, Illinois have a bachelor's degree or higher

The population of Harris County, Texas is

4,538,028

Source: 2010 Census

Source: Population Estimates

Source: 2010 Census

Source: Population Estimates

Source: 2010 Census

Source: American Community Survey

Source: Population Estimates