12 ZIP Codes
| Zip Code | City | Population ↓ |
|---|---|---|
| 20657 | Lusby | 20,699 |
| 20639 | Huntingtown | 15,544 |
| 20678 | Prince Frederick | 12,752 |
| 20732 | Chesapeake Beach | 10,722 |
| 20736 | Owings | 9,960 |
| 20754 | Dunkirk | 7,545 |
| 20685 | Saint Leonard | 6,866 |
| 20676 | Port Republic | 3,218 |
| 20689 | Sunderland | 1,809 |
| 20688 | Solomons | 1,290 |
| 20629 | Dowell | 1,150 |
| 20615 | Broomes Island | 460 |
The data shown reflect ZCTAs from the US Census. As of 2025, there are 12 ZCTAs in Calvert County, Maryland (US Census).