
Loudon township
- County:
- Seneca County
- County Seat:
- No
- Area (mi²):
- 33.514
- State:
- Ohio
Loudon township is located in Seneca County, Ohio. Loudon township has a 2025 population of 2,187. Loudon township is currently declining at a rate of -0.09% annually and its population has decreased by -1.53% since the most recent census, which recorded a population of 2,221 in 2020.
The average household income in Loudon township is $90,689 with a poverty rate of 8.34%. The median age in Loudon township is 38.7 years: 38 years for males, and 39.8 years for females.