
Henry County
- State:
- Iowa
- County Seat:
- Mount Pleasant
Henry County's estimated 2025 population is 18,135 with a growth rate of -3.75% in the past year according to the most recent United States census data. Henry County is the 38th largest county in Iowa. The 2010 population was 20,112 and has seen a growth of -9.83% since that time.