Carroll County Flag

Carroll County

State:
Illinois
County Seat:
Mount Carroll

Carroll County's estimated 2025 population is 15,420 with a growth rate of -0.34% in the past year according to the most recent United States census data. Carroll County is the 67th largest county in Illinois. The 2010 population was 15,395 and has seen a growth of 0.16% since that time.

15,420
Total Population
35
Population Density (mi²)
67
Population Rank (State)
-53 -0.34%
Annual Population Growth

Carroll County Population

Demographics

Economics and Income Statistics