Richland County, Illinois
Richland County is a county in the U.S. state of Illinois. In the 2020 census, 15,813 people lived there.[1] The county seat is Olney.
Richland County was founded on February 24, 1841.
References
[change | change source]- ↑ "QuickFacts: Richland County, Illinois". United States Census Bureau. Retrieved August 11, 2023.
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