Dayton
- County:
- Rhea County
- County Seat:
- Yes
- Area (mi²):
- 8.504
- State:
- Tennessee
Dayton is a city located in Rhea County, Tennessee. Dayton has a 2026 population of 7,796. It is also the county seat of Rhea County. Dayton is currently growing at a rate of 0.97% annually and its population has increased by 5.12% since the most recent census, which recorded a population of 7,416 in 2020.