
Darke County
- State:
- Ohio
- County Seat:
- Greenville
Darke County's estimated 2025 population is 51,193 with a growth rate of -0.22% in the past year according to the most recent United States census data. Darke County is the 49th largest county in Ohio. The 2010 population was 52,964 and has seen a growth of -3.34% since that time.