There are 26 zip codes in St. Mary's County, Maryland. The most populated is 20653, located in Lexington Park. * 2024 populations estimated based on the latest ACS 5-year data.
Zip Code | Population | City |
|---|---|---|
| 20653 | 27,053 | Lexington Park |
| 20659 | 23,346 | Mechanicsville |
| 20650 | 15,522 | Leonardtown |
| 20619 | 13,925 | California |
| 20636 | 11,089 | Hollywood |
| 20634 | 7,853 | Great Mills |
| 20670 | 1,403 | Patuxent River |
| 20620 | 1,325 | Callaway |
| 20609 | 1,240 | Avenue |
| 20618 | 1,087 | Bushwood |
| 20624 | 990 | Clements |
| 20686 | 963 | Saint Marys City |
| 20690 | 843 | Tall Timbers |
| 20674 | 807 | Piney Point |
| 20621 | 775 | Chaptico |
| 20692 | 721 | Valley Lee |
| 20628 | 631 | Dameron |
| 20684 | 627 | Saint Inigoes |
| 20680 | 588 | Ridge |
| 20687 | 360 | Scotland |
| 20630 | 307 | Drayden |
| 20606 | 247 | Abell |
| 20626 | 239 | Coltons Point |
| 20656 | 203 | Loveville |
| 20667 | 159 | Park Hall |
| 20660 | 0 | Morganza |