File:Richland_County_Courthouse_in_Olney.jpg · Wikimedia Commons · See Wikimedia Commons
Richland County
Sign in to saveAlso known as Richland County, Illinois, Richland County, IL
county in Illinois, United States
Key facts
- Country
- United States
- State
- Illinois
- Founded
- February 24, 1841
- Named after
- Richland County, Ohio
- Seat
- Olney
- Largest city
- Olney
- Total
- 362 sq mi (940 km )
- Land
- 356 sq mi (920 km )
- Water
- 1.9 sq mi (4.9 km ) 0.5%
- Estimate 2025
- 15,219
- Density
- 44.4/sq mi (17.2/km )
- Time zone
- UTC−6 ( Central )
- Summer dst
- UTC−5 ( CDT )
- Congressional district
- 12th
- Website
- richlandcounty .illinois .gov
via Wikipedia infobox
Wikidata facts
- Named after
- Richland County
- Country
- United States
- Located in
- Illinois
- Capital
- Olney
- Population
- 15813
- Area
- 938
- Shares border with
- Clay County
- Image
- Richland County Courthouse in Olney.jpg
- Households
- 6527
Show 7 more facts
- Commons category
- Richland County, Illinois
- topic's main category
- Category:Richland County, Illinois
- inception
- 1841-02-24
- different from
- Richland Parish
- water as percent of area
- 0.5
- native label
- Richland County
- per capita income
- 28457
Sources (8)
via Wikidata · CC0
~6 min read
Encyclopedic overview
Richland County is a county located in the U.S. state of Illinois. According to the 2020 United States census, it had a population of 15,813. Its county seat is Olney.
History
Excerpted from Wikipedia’s “Richland County” article, available under the CC BY-SA 4.0 licence.