
Senecaville
- County:
- Guernsey County
- County Seat:
- No
- Area (mi²):
- 0.475
- State:
- Ohio
Senecaville is a village located in Guernsey County, Ohio. Senecaville has a 2025 population of 411. Senecaville is currently declining at a rate of -0.48% annually and its population has decreased by -2.14% since the most recent census, which recorded a population of 420 in 2020.
The average household income in Senecaville is $54,097 with a poverty rate of 22.89%. The median age in Senecaville is 40.7 years: 40.7 years for males, and 39.9 years for females.