Brown   County IL United States

County FIPS 17009
Largest City Mount Sterling
State Illinois
Latitude 39.9618
Longitude -90.7504
Population 6,322
Density 20.67 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: $67,917
Median individual: $35,604

Race

Mode: 74.5% White

Gender

 63.9% male 

Rent

  $698 / month  

Median house value: $151,931.0

Age

Median: 41.0 years old

Education

With at least college degree: 12.6%
With STEM degree: 51.8%

Marital Status

 38.2% married 

Never married: 43.9%

Labor Force Participation

 41.4% working 

Unemployed: 3.1%

Average Family Size

 2.77 people 

Commute Time

 15.9 minutes 

Health Care

 2.1% uninsured 

Poverty

 9.2%

All data comes from the SimpleMaps US Counties Database, 2026.

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