Oneonta
- County:
- Otsego County
- County Seat:
- No
- Area (mi²):
- 4.361
- State:
- New York
Oneonta is a city located in Otsego County, New York. Oneonta has a 2026 population of 15,679. Oneonta is currently declining at a rate of -0.17% annually but its population has increased by 20.11% since the most recent census, which recorded a population of 13,054 in 2020.