Troy
- County:
- Miami County
- County Seat:
- Yes
- Area (mi²):
- 12.635
- State:
- Ohio
Troy is a city located in Miami County, Ohio. Troy has a 2026 population of 27,122. It is also the county seat of Miami County. Troy is currently growing at a rate of 0.97% annually and its population has increased by 2.79% since the most recent census, which recorded a population of 26,385 in 2020.