
Seneca township
- County:
- Lenawee County
- County Seat:
- No
- Area (mi²):
- 40.063
- State:
- Michigan
Seneca township is located in Lenawee County, Michigan. Seneca township has a 2025 population of 1,102. Seneca township is currently declining at a rate of -0.63% annually and its population has decreased by -3.5% since the most recent census, which recorded a population of 1,142 in 2020.
The average household income in Seneca township is $77,614 with a poverty rate of 3.76%. The median age in Seneca township is 52.4 years: 49.8 years for males, and 55.9 years for females.