
Duncansville
- County:
- Blair County
- County Seat:
- No
- Area (mi²):
- 0.532
- State:
- Pennsylvania
Duncansville is a borough located in Blair County, Pennsylvania. Duncansville has a 2025 population of 1,194. Duncansville is currently declining at a rate of -0.91% annually and its population has decreased by -4.4% since the most recent census, which recorded a population of 1,249 in 2020.
The average household income in Duncansville is $77,393 with a poverty rate of 9.28%. The median age in Duncansville is 45.4 years: 41.9 years for males, and 49.7 years for females.