Carroll County, Illinois

Carroll County
Carroll County Courthouse
Map of Illinois highlighting Carroll County
Location within the U.S. state of Illinois
Map of the United States highlighting Illinois
Illinois's location within the U.S.
Coordinates: 42°04′N 89°55′W / 42.06°N 89.92°W / 42.06; -89.92
Country United States
State Illinois
Founded1839
Named forCharles Carroll
SeatMount Carroll
Largest citySavanna
Area
 • Total466 sq mi (1,210 km2)
 • Land445 sq mi (1,150 km2)
 • Water22 sq mi (60 km2)  4.6%
Population
 (2020)
 • Total15,702
 • Estimate 
(2023)
15,526 Decrease
 • Density34/sq mi (13/km2)
Time zoneUTC−6 (Central)
 • Summer (DST)UTC−5 (CDT)
Congressional district17th
Websitewww.carroll-county.net

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]

  1. ^ "Carroll County, Illinois". United States Census Bureau. Retrieved June 8, 2023.
  2. ^ "Find a County". National Association of Counties. Archived from the original on May 31, 2011. Retrieved June 7, 2011.