
St. Leon
- County:
- Dearborn County
- County Seat:
- No
- Area (mi²):
- 6.827
- State:
- Indiana
St. Leon is a town located in Dearborn County, Indiana. St. Leon has a 2025 population of 667. St. Leon is currently growing at a rate of 0.15% annually and its population has increased by 0.76% since the most recent census, which recorded a population of 662 in 2020.
The average household income in St. Leon is $105,914 with a poverty rate of 11.46%. The median age in St. Leon is 31.8 years: 28.9 years for males, and 32.3 years for females.