| Locality | Post Code |
|---|---|
| Bethlehem, Caroline | 21609 |
| Denton, Caroline | 21629 |
| Federalsburg, Caroline | 21632 |
| Goldsboro, Caroline | 21636 |
| Greensboro, Caroline | 21639 |
| Henderson, Caroline | 21640 |
| Hillsboro, Caroline | 21641 |
| Marydel, Caroline | 21649 |
| Preston, Caroline | 21655 |
| Ridgely, Caroline | 21660 |
| Templeville, Caroline | 21670 |