QuickFacts

Median household income of Maricopa County, Arizona is

$54,229

Population per square mile in San Diego County, California is

735.8

The population of North Carolina is

10,146,788

Population per square mile in Harris County, Texas is

2,402.4

Population per square mile in Philadelphia city, Pennsylvania is

11,379.5

12.9%

of persons in North Carolina are 65 years and over

23.7%

of persons in Michigan are under 18 years

The population of Los Angeles city, California is

3,971,883

Population per square mile in Illinois is

231.1

23.7%

of persons in Cook County, Illinois are under 18 years

Source: American Community Survey

Source: 2010 Census

Source: Population Estimates

Source: 2010 Census

Source: Population Estimates

Source: 2010 Census