Richland County, Illinois
County in Illinois, United States / From Wikipedia, the free encyclopedia
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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.[1] Its county seat is Olney.[2][3]: County Seats
Quick Facts Country, State ...
Richland County | |
---|---|
Coordinates: 38°43′N 88°05′W | |
Country | United States |
State | Illinois |
Founded | February 24, 1841 |
Named for | Richland County, Ohio |
Seat | Olney |
Largest city | Olney |
Area | |
• Total | 362 sq mi (940 km2) |
• Land | 356 sq mi (920 km2) |
• Water | 1.9 sq mi (5 km2) 0.5% |
Population (2020) | |
• Total | 15,813 |
• Estimate (2021) | 15,796 |
• Density | 44/sq mi (17/km2) |
Time zone | UTC−6 (Central) |
• Summer (DST) | UTC−5 (CDT) |
Congressional district | 12th |
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