61489   Zip Code Williamsfield Knox IL United States

City Williamsfield
County Knox
State Illinois
Latitude 40.93462
Longitude -90.02664
Population 820
Density 17.36 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: $98,125
Median individual: $52,778

Race

Mode: 90.0% White

Gender

 52.1% male 

Rent

  $642 / month  

Median house value: $142,587.0

Age

Median: 45.6 years old

Education

With at least college degree: 25.2%
With STEM degree: 43.5%

Marital Status

 59.2% married 

Never married: 27.2%

Labor Force Participation

 66.9% working 

Unemployed: 2.5%

Average Family Size

 2.73 people 

Commute Time

 22.5 minutes 

Health Care

 2.6% uninsured 

Poverty

 3.4%

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

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