Carroll County | |
---|---|
Coordinates: 42°04′N 89°55′W / 42.06°N 89.92°W | |
Country | United States |
State | Illinois |
Founded | 1839 |
Named for | Charles Carroll |
Seat | Mount Carroll |
Largest city | Savanna |
Area | |
• Total | 466 sq mi (1,210 km2) |
• Land | 445 sq mi (1,150 km2) |
• Water | 22 sq mi (60 km2) 4.6% |
Population (2020) | |
• Total | 15,702 |
• Estimate (2023) | 15,526 |
• Density | 34/sq mi (13/km2) |
Time zone | UTC−6 (Central) |
• Summer (DST) | UTC−5 (CDT) |
Congressional district | 17th |
Website | www |
Carroll County is a county located in the U.S. state of Illinois. As of the 2020 census, the population was 15,702.[1] Its county seat is Mount Carroll.[2]