Marcus Hook
- County:
- Delaware County
- County Seat:
- No
- Area (mi²):
- 1.108
- State:
- Pennsylvania
Marcus Hook is a borough located in Delaware County, Pennsylvania. Marcus Hook has a 2026 population of 2,467. Marcus Hook is currently growing at a rate of 0.69% annually and its population has increased by 0.49% since the most recent census, which recorded a population of 2,455 in 2020.