QuickFacts

12.5%

of persons in Illinois are 65 years and over

25.7%

of persons in Georgia are under 18 years

23.7%

of persons in Ohio are under 18 years

Population per square mile in Harris County, Texas is

2,402.4

11.4%

of persons in California are 65 years and over

Population per square mile in Ohio is

282.3

The population of Pennsylvania is

12,784,227

The population of Philadelphia city, Pennsylvania is

1,567,442

Median household income of California is

$61,818

15.4%

of persons in Pennsylvania are 65 years and over

Source: 2010 Census

Source: Population Estimates

Source: American Community Survey

Source: 2010 Census