
Scioto County
- State:
- Ohio
- County Seat:
- Portsmouth
Scioto County's estimated 2025 population is 71,529 with a growth rate of -0.31% in the past year according to the most recent United States census data. Scioto County is the 36th largest county in Ohio. The 2010 population was 79,672 and has seen a growth of -10.22% since that time.