1 cities
| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Leonardtown | 1 | 5,291 | 4,541 | 2.42% | 1,374 | 4 | Town |
Leonardtown is the largest city in St. Mary's County, with a population of 5,291.
Leonardtown is the smallest city in St. Mary's County, with a population of 5,291.
There is 1 city in St. Mary's County, Maryland.