
Seneca township
- County:
- Seneca County
- County Seat:
- No
- Area (mi²):
- 35.645
- State:
- Ohio
Seneca township is located in Seneca County, Ohio. Seneca township has a 2025 population of 1,435. Seneca township is currently declining at a rate of 0% annually and its population has decreased by -1.51% since the most recent census, which recorded a population of 1,457 in 2020.
The average household income in Seneca township is $106,324 with a poverty rate of 2.48%. The median age in Seneca township is 44.2 years: 37.9 years for males, and 47.7 years for females.