Richland   County IL United States

County FIPS 17159
Largest City Olney
State Illinois
Latitude 38.7124
Longitude -88.0851
Population 15,598
Density 43.34 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: $62,455
Median individual: $35,486

Race

Mode: 93.8% White

Gender

 50.4% female 

Rent

  $805 / month  

Median house value: $112,529.0

Age

Median: 42.3 years old

Education

With at least college degree: 19.1%
With STEM degree: 42.4%

Marital Status

 49.6% married 

Never married: 25.9%

Labor Force Participation

 61.4% working 

Unemployed: 3.1%

Average Family Size

 3.05 people 

Commute Time

 19.7 minutes 

Health Care

 6.1% uninsured 

Poverty

 12.1%

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

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