
Adams County
- State:
- Ohio
- County Seat:
- West Union
Adams County's estimated 2025 population is 27,645 with a growth rate of 0.22% in the past year according to the most recent United States census data. Adams County is the 76th largest county in Ohio. The 2010 population was 28,530 and has seen a growth of -3.1% since that time.