Warren County, Illinois
Warren County, Illinois | |
|---|---|
Warren County Courthouse in Monmouth | |
Location within the U.S. state of Illinois | |
| Coordinates: 40°51′N 90°37′W / 40.85°N 90.61°W | |
| Country | United States |
| State | Illinois |
| Founded | 1825 |
| Named after | Joseph Warren |
| Seat | Monmouth |
| Largest city | Monmouth |
| Area | |
• Total | 543 sq mi (1,410 km2) |
| • Land | 542 sq mi (1,400 km2) |
| • Water | 0.6 sq mi (1.6 km2) 0.1% |
| Population (2020) | |
• Total | 16,835 |
• Estimate (2024) | 16,217 |
| • Density | 31.1/sq mi (12.0/km2) |
| Time zone | UTC−6 (Central) |
| • Summer (DST) | UTC−5 (CDT) |
| Congressional districts | 15th, 17th |
| Website | www |
Warren County is a county in the U.S. state of Illinois. According to the 2020 census, it had a population of 16,835. Its county seat is Monmouth.