美国邮政编码列表
| 州 | 城市 | 邮政编码 |
|---|---|---|
| MD | Callaway | 20620 |
| MD | Chaptico | 20621 |
| MD | Charlotte Hall | 20622 |
| MD | Cheltenham | 20623 |
| MD | Clements | 20624 |
| MD | Cobb Island | 20625 |
| MD | Coltons Point | 20626 |
| MD | Compton | 20627 |
| MD | Dameron | 20628 |
| MD | Dowell | 20629 |
| MD | Drayden | 20630 |
| MD | Faulkner | 20632 |
| MD | Great Mills | 20634 |
| MD | Helen | 20635 |
| MD | Hollywood | 20636 |
| MD | Hughesville | 20637 |
| MD | Huntingtown | 20639 |
| MD | Indian Head | 20640 |
| MD | Ironsides | 20643 |
| MD | Issue | 20645 |