McConnelsville
- County:
- Morgan County
- County Seat:
- Yes
- Area (mi²):
- 1.793
- State:
- Ohio
McConnelsville is a village located in Morgan County, Ohio. McConnelsville has a 2026 population of 1,633. It is also the county seat of Morgan County. McConnelsville is currently declining at a rate of -0.67% annually and its population has decreased by -1.74% since the most recent census, which recorded a population of 1,662 in 2020.