QuickFacts

Population per square mile in San Diego County, California is

735.8

15.4%

of persons in Pennsylvania are 65 years and over

In Cook County, Illinois

61.0%

of females 16 years+ are in the civilian labor force

10.3%

of persons in Chicago city, Illinois are 65 years and over

26.4%

of persons in Maricopa County, Arizona are under 18 years

Population per square mile in Philadelphia city, Pennsylvania is

11,379.5

The population of San Diego County, California is

3,299,521

The population of Cook County, Illinois is

5,238,216

Population per square mile in Illinois is

231.1

14.1%

of persons in Ohio are 65 years and over

Source: 2010 Census

Source: American Community Survey

Source: 2010 Census

Source: Population Estimates

Source: 2010 Census