QuickFacts

10.3%

of persons in Texas are 65 years and over

23.7%

of persons in Cook County, Illinois are under 18 years

12.1%

of persons in New York city, New York are 65 years and over

22.3%

of persons in New York are under 18 years

Population per square mile in Harris County, Texas is

2,402.4

Population per square mile in Chicago city, Illinois is

11,841.8

The population of San Diego County, California is

3,299,521

Population per square mile in Chicago city, Illinois is

11,841.8

9.0%

of persons in Houston city, Texas are 65 years and over

Population per square mile in Georgia is

168.4

Source: 2010 Census

Source: Population Estimates

Source: 2010 Census