1 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Leonardtown | 1 | 5,166 | 4,541 | 2.48% | 1,342 | 4 | Town |
Leonardtown is the largest city in St. Mary's County, with a population of 5,166.
Leonardtown is the smallest city in St. Mary's County, with a population of 5,166.
There is 1 city in St. Mary's County, Maryland.