Gratz
- County:
- Dauphin County
- County Seat:
- No
- Area (mi²):
- 2.949
- State:
- Pennsylvania
Gratz is a borough located in Dauphin County, Pennsylvania. Gratz has a 2026 population of 740. Gratz is currently growing at a rate of 0.14% annually but its population has decreased by -0.27% since the most recent census, which recorded a population of 742 in 2020.