QuickFacts

The population of Chicago city, Illinois is

2,720,546

Population per square mile in Cook County, Illinois is

5,495.1

Median household income of Cook County, Illinois is

$55,251

23.1%

of persons in Los Angeles city, California are under 18 years

The population of San Diego County, California is

3,299,521

12.9%

of persons in North Carolina are 65 years and over

The population of Pennsylvania is

12,784,227

23.9%

of persons in North Carolina are under 18 years

Population per square mile in Ohio is

282.3

14.1%

of persons in Ohio are 65 years and over

Source: Population Estimates

Source: 2010 Census

Source: American Community Survey

Source: 2010 Census

Source: Population Estimates

Source: 2010 Census

Source: Population Estimates

Source: 2010 Census