Leon
- County:
- Decatur County
- County Seat:
- Yes
- Area (mi²):
- 3.132
- State:
- Iowa
Leon is a city located in Decatur County, Iowa. Leon has a 2026 population of 1,779. It is also the county seat of Decatur County. Leon is currently declining at a rate of -1.82% annually and its population has decreased by -1.71% since the most recent census, which recorded a population of 1,810 in 2020.