Campbell
- County:
- Mahoning County
- County Seat:
- No
- Area (mi²):
- 3.717
- State:
- Ohio
Campbell is a city located in Mahoning County, Ohio. Campbell has a 2026 population of 7,751. Campbell is currently declining at a rate of -0.12% annually and its population has decreased by -1.1% since the most recent census, which recorded a population of 7,837 in 2020.