
Fort Gratiot charter township
- County:
- St. Clair County
- County Seat:
- No
- Area (mi²):
- 15.957
- State:
- Michigan
Fort Gratiot charter township is located in St. Clair County, Michigan. Fort Gratiot charter township has a 2025 population of 11,343. Fort Gratiot charter township is currently declining at a rate of -0.28% annually but its population has increased by 1.05% since the most recent census, which recorded a population of 11,225 in 2020.
The average household income in Fort Gratiot charter township is $93,330 with a poverty rate of 4.78%. The median age in Fort Gratiot charter township is 50.5 years: 48.5 years for males, and 51.7 years for females.