Calhoun County Flag

Calhoun County

State:
Illinois
County Seat:
Hardin

Calhoun County's estimated 2025 population is 4,245 with a growth rate of -0.84% in the past year according to the most recent United States census data. Calhoun County is the 100th largest county in Illinois. The 2010 population was 5,093 and has seen a growth of -16.65% since that time.

4,245
Total Population
17
Population Density (mi²)
100
Population Rank (State)
-36 -0.84%
Annual Population Growth

Calhoun County Population

Demographics

Economics and Income Statistics