| ZIP Code | ZIP Code Place Name | County | ZIP Code Type |
|---|---|---|---|
| 21613 | Cambridge | Dorchester County | Standard |
| 21622 | Church Creek | Dorchester County | Standard |
| 21626 | Crapo | Dorchester County | Standard |
| 21627 | Crocheron | Dorchester County | Standard |
| 21631 | East New Market | Dorchester County | Standard |
| 21632 | Federalsburg | Caroline County | Standard |
| 21634 | Fishing Creek | Dorchester County | Standard |
| 21643 | Hurlock | Dorchester County | Standard |
| 21648 | Madison | Dorchester County | Standard |
| 21659 | Rhodesdale | Dorchester County | Standard |
| 21664 | Secretary | Dorchester County | PO Box |
| 21669 | Taylors Island | Dorchester County | PO Box |
| 21672 | Toddville | Dorchester County | Standard |
| 21675 | Wingate | Dorchester County | Standard |
| 21677 | Woolford | Dorchester County | Standard |
| 21835 | Linkwood | Dorchester County | Standard |
| 21869 | Vienna | Dorchester County | Standard |