QuickFacts

15.4%

of persons in Pennsylvania are 65 years and over

23.7%

of persons in Cook County, Illinois are under 18 years

11.4%

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

23.1%

of persons in Chicago city, Illinois are under 18 years

The population of Los Angeles County, California is

10,170,292

The population of San Diego County, California is

3,299,521

25.9%

of persons in Houston city, Texas are under 18 years

Median household income of Cook County, Illinois is

$55,251

9.0%

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

The population of Los Angeles city, California is

3,971,883

Source: 2010 Census

Source: Population Estimates

Source: 2010 Census

Source: American Community Survey

Source: 2010 Census

Source: Population Estimates