
Coles County
- State:
- Illinois
- County Seat:
- Charleston
Coles County's estimated 2025 population is 45,488 with a growth rate of -0.62% in the past year according to the most recent United States census data. Coles County is the 31st largest county in Illinois. The 2010 population was 53,865 and has seen a growth of -15.55% since that time.