Eaton
- County:
- Preble County
- County Seat:
- Yes
- Area (mi²):
- 6.427
- State:
- Ohio
Eaton is a city located in Preble County, Ohio. Eaton has a 2026 population of 8,337. It is also the county seat of Preble County. Eaton is currently growing at a rate of 0.46% annually but its population has decreased by -0.64% since the most recent census, which recorded a population of 8,391 in 2020.
The median household income in Eaton is $51,467 with a poverty rate of 14.06%. The median age in Eaton is 43.3 years: 42.7 years for males, and 43.9 years for females. For every 100 females there are 82.0 males.