
Leonardtown
- County:
- St. Mary's County
- County Seat:
- Yes
- Area (mi²):
- 3.85
- State:
- Maryland
Leonardtown is a town located in St. Mary's County, Maryland. Leonardtown has a 2025 population of 5,230. It is also the county seat of .Leonardtown is currently growing at a rate of 2.51% annually and its population has increased by 13.97% since the most recent census, which recorded a population of 4,589 in 2020.
The average household income in Leonardtown is $150,716 with a poverty rate of 2.59%. The median age in Leonardtown is 35 years: 33.6 years for males, and 36.3 years for females.