62305   Zip Code Quincy Adams IL United States

City Quincy
County Adams
State Illinois
Latitude 39.92915
Longitude -91.34441
Population 19,036
Density 136.79 people per square mile
Time Zone America/Chicago
  • All demographic data comes from the 2024 American Community Survey (5-year study).
  • Learn more about each field.
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Household Income

Median household: $83,598
Median individual: $43,434

Race

Mode: 95.0% White

Gender

 52.5% female 

Rent

  $926 / month  

Median house value: $213,543.0

Age

Median: 46.4 years old

Education

With at least college degree: 35.0%
With STEM degree: 40.7%

Marital Status

 59.4% married 

Never married: 24.2%

Labor Force Participation

 64.9% working 

Unemployed: 1.8%

Average Family Size

 2.94 people 

Commute Time

 15.1 minutes 

Health Care

 5.1% uninsured 

Poverty

 7.2%

All data comes from the SimpleMaps US Zips Comprehensive Database, February 2026.

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