QuickFacts

22.5%

of persons in Philadelphia city, Pennsylvania are under 18 years

23.4%

of persons in San Diego County, California are under 18 years

In San Diego County, California

57.2%

of females 16 years+ are in the civilian labor force

The population of Harris County, Texas is

4,538,028

11.4%

of persons in San Diego County, California are 65 years and over

Population per square mile in Philadelphia city, Pennsylvania is

11,379.5

Population per square mile in Philadelphia city, Pennsylvania is

11,379.5

12.1%

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

14.1%

of persons in Ohio are 65 years and over

The population of Ohio is

11,614,373

Source: 2010 Census

Source: American Community Survey

Source: Population Estimates

Source: 2010 Census

Source: Population Estimates