St. Leo
- County:
- Pasco County
- County Seat:
- No
- Area (mi²):
- 1.22
- State:
- Florida
St. Leo is a town located in Pasco County, Florida. St. Leo has a 2026 population of 2,472. St. Leo is currently growing at a rate of 0.08% annually but its population has decreased by -0.84% since the most recent census, which recorded a population of 2,493 in 2020.