Tecumseh
- County:
- Lenawee County
- County Seat:
- No
- Area (mi²):
- 5.649
- State:
- Michigan
Tecumseh is a city located in Lenawee County, Michigan. Tecumseh has a 2026 population of 8,606. Tecumseh is currently declining at a rate of -0.03% annually and its population has decreased by -0.73% since the most recent census, which recorded a population of 8,669 in 2020.