Casselman
- County:
- Fayette County
- County Seat:
- No
- Area (mi²):
- 0.201
- State:
- Pennsylvania
Casselman is a borough located in Fayette County, Pennsylvania. Casselman has a 2026 population of 117. Casselman is currently growing at a rate of 3.54% annually and its population has increased by 15.84% since the most recent census, which recorded a population of 101 in 2020.
The median age in Casselman is 46.5 years: 54.2 years for males, and 28.5 years for females. For every 100 females there are 79.5 males.