St. Mary's County, Maryland ZIP Codes
- ZIP records
26 - Cities represented
26 - Sum of listed ZIP population estimates
113,480
Population sum includes positive estimates in these ZIP records; it is not an official county population.
Top ZIP Codes by Population
| Rank | ZIP Code | City | Population estimate |
|---|---|---|---|
| 1 | 20653 | Lexington Park | 26,852 |
| 2 | 20659 | Mechanicsville | 24,324 |
| 3 | 20650 | Leonardtown | 16,094 |
| 4 | 20619 | California | 14,212 |
| 5 | 20636 | Hollywood | 10,486 |
| 6 | 20634 | Great Mills | 7,088 |
| 7 | 20670 | Patuxent River | 2,046 |
| 8 | 20618 | Bushwood | 1,705 |
| 9 | 20620 | Callaway | 1,115 |
| 10 | 20690 | Tall Timbers | 1,077 |
Cities in St. Mary's County
- Abell
- Avenue
- Bushwood
- California
- Callaway
- Chaptico
- Clements
- Coltons Point
- Dameron
- Drayden
- Great Mills
- Hollywood
- Leonardtown
- Lexington Park
- Loveville
- Mechanicsville
- Morganza
- Park Hall
- Patuxent River
- Piney Point
- Ridge
- Saint Inigoes
- Saint Marys City
- Scotland
- Tall Timbers
- Valley Lee
ZIP Directory
- ZIP 20606
- ZIP 20609
- ZIP 20618
- ZIP 20619
- ZIP 20620
- ZIP 20621
- ZIP 20624
- ZIP 20626
- ZIP 20628
- ZIP 20630
- ZIP 20634
- ZIP 20636
- ZIP 20650
- ZIP 20653
- ZIP 20656
- ZIP 20659
- ZIP 20660
- ZIP 20667
- ZIP 20670
- ZIP 20674
- ZIP 20680
- ZIP 20684
- ZIP 20686
- ZIP 20687
- ZIP 20690
- ZIP 20692
Browse all ZIP data for Maryland
Methodology: Records are grouped by the source file's listed county and state. Population sums add positive ZIP-level estimates and are not official county totals; city counts use distinct city labels in the source.