
Calhoun County
- State:
- Iowa
- County Seat:
- Rockwell City
Calhoun County's estimated 2025 population is 9,839 with a growth rate of 0.39% in the past year according to the most recent United States census data. Calhoun County is the 74th largest county in Iowa. The 2010 population was 10,159 and has seen a growth of -3.15% since that time.