
Duncan township
- County:
- Tioga County
- County Seat:
- No
- Area (mi²):
- 20.043
- State:
- Pennsylvania
Duncan township is located in Tioga County, Pennsylvania. Duncan township has a 2025 population of 192. Duncan township is currently growing at a rate of 0.52% annually and its population has increased by 2.13% since the most recent census, which recorded a population of 188 in 2020.
The average household income in Duncan township is $71,642 with a poverty rate of 13.44%. The median age in Duncan township is 42.5 years: 47.5 years for males, and 36.2 years for females.