Newton Hamilton
- County:
- Mifflin County
- County Seat:
- No
- Area (mi²):
- 0.155
- State:
- Pennsylvania
Newton Hamilton is a borough located in Mifflin County, Pennsylvania. Newton Hamilton has a 2026 population of 198. Newton Hamilton is currently growing at a rate of 1.54% annually and its population has increased by 1.02% since the most recent census, which recorded a population of 196 in 2020.