| Localité | Code postal |
|---|---|
| Chance, Somerset | 21821 |
| Crisfield, Somerset | 21817 |
| Dames Quarter, Somerset | 21821 |
| Deal Island, Somerset | 21821 |
| Ewell, Somerset | 21824 |
| Fairmount, Somerset | 21867 |
| Kingston, Somerset | 21871 |
| Manokin, Somerset | 21836 |
| Marion, Somerset | 21838 |
| Marion Station, Somerset | 21838 |
| Oriole, Somerset | 21853 |
| Princess Anne, Somerset | 21853 |
| Rehobeth, Somerset | 21857 |
| Rhodes Point, Somerset | 21824 |
| Rumbley, Somerset | 21871 |
| Tylerton, Somerset | 21866 |
| Upper Fairmount, Somerset | 21867 |
| Upper Hill, Somerset | 21867 |
| Wenona, Somerset | 21821 |
| Westover, Somerset | 21871 |