Delta
- County:
- York County
- County Seat:
- No
- Area (mi²):
- 0.262
- State:
- Pennsylvania
Delta is a borough located in York County, Pennsylvania. Delta has a 2026 population of 717. Delta is currently growing at a rate of 1.13% annually and its population has increased by 1.7% since the most recent census, which recorded a population of 705 in 2020.