| 20610 Barstow | 410/443/667 | Calvert County | Maryland (MD) |
| 20615 Broomes Island | 410/443/667 | Calvert County | Maryland (MD) |
| 20629 Dowell | 410/443/667 | Calvert County | Maryland (MD) |
| 20639 Huntingtown | 410/443/667 | Calvert County | Maryland (MD) |
| 20657 Lusby | 410/443/667 | Calvert County | Maryland (MD) |
| 20676 Port Republic | 410/443/667 | Calvert County | Maryland (MD) |
| 20678 Dares Beach | 410/443/667 | Calvert County | Maryland (MD) |
| 20678 Pr Frederick | 410/443/667 | Calvert County | Maryland (MD) |
| 20678 Prince Frederick | 410/443/667 | Calvert County | Maryland (MD) |
| 20678 Prnc Frederck | 410/443/667 | Calvert County | Maryland (MD) |
| 20685 Saint Leonard | 410/443/667 | Calvert County | Maryland (MD) |
| 20688 Solomons | 410/443/667 | Calvert County | Maryland (MD) |
| 20689 Sunderland | 410/443/667 | Calvert County | Maryland (MD) |
| 20714 Holland Point | 410/443/667 | Calvert County | Maryland (MD) |
| 20714 North Beach | 410/443/667 | Calvert County | Maryland (MD) |
| 20714 Rose Haven | 410/443/667 | Calvert County | Maryland (MD) |
| 20732 Chesapeak Bch | 410/443/667 | Calvert County | Maryland (MD) |
| 20732 Chesapeake Beach | 410/443/667 | Calvert County | Maryland (MD) |
| 20736 Owings | 301/240/227 | Calvert County | Maryland (MD) |
| 20754 Dunkirk | 410/443/667 | Calvert County | Maryland (MD) |