Napoleon
- County:
- Henry County
- County Seat:
- Yes
- Area (mi²):
- 6.214
- State:
- Ohio
Napoleon is a city located in Henry County, Ohio. Napoleon has a 2026 population of 8,724. It is also the county seat of Henry County. Napoleon is currently declining at a rate of -0.33% annually and its population has decreased by -1.55% since the most recent census, which recorded a population of 8,861 in 2020.