美国邮政编码列表
| 州 | 城市 | 邮政编码 |
|---|---|---|
| MD | Frederick | 21704 |
| MD | Frederick | 21705 |
| MD | Frederick | 21709 |
| MD | Adamstown | 21710 |
| MD | Big Pool | 21711 |
| MD | Boonsboro | 21713 |
| MD | Braddock Heights | 21714 |
| MD | Brownsville | 21715 |
| MD | Brunswick | 21716 |
| MD | Buckeystown | 21717 |
| MD | Burkittsville | 21718 |
| MD | Cascade | 21719 |
| MD | Cavetown | 21720 |
| MD | Chewsville | 21721 |
| MD | Clear Spring | 21722 |
| MD | Cooksville | 21723 |
| MD | Emmitsburg | 21727 |
| MD | Fairplay | 21733 |
| MD | Funkstown | 21734 |
| MD | Glenelg | 21737 |