Richland County, Illinois
Richland County, Illinois | |
|---|---|
Richland County Courthouse in Olney | |
Location within the U.S. state of Illinois | |
| Coordinates: 38°43′N 88°05′W / 38.71°N 88.09°W | |
| Country | United States |
| State | Illinois |
| Founded | February 24, 1841 |
| Named after | 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 (4.9 km2) 0.5% |
| Population (2020) | |
• Total | 15,813 |
• Estimate (2024) | 15,362 |
| • Density | 44.4/sq mi (17.2/km2) |
| Time zone | UTC−6 (Central) |
| • Summer (DST) | UTC−5 (CDT) |
| Congressional district | 12th |
| Website | richlandcounty |
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.