
Seneca township
- County:
- Noble County
- County Seat:
- No
- Area (mi²):
- 23.61
- State:
- Ohio
Seneca township is located in Noble County, Ohio. Seneca township has a 2025 population of 416. Seneca township is currently growing at a rate of 0.24% annually and its population has increased by 1.22% since the most recent census, which recorded a population of 411 in 2020.
The average household income in Seneca township is $78,426 with a poverty rate of 2.4%. The median age in Seneca township is 58 years: 61.5 years for males, and 41.6 years for females.