| Locality | Post Code |
|---|---|
| Burgess, Northumberland | 22432 |
| Callao, Northumberland | 22435 |
| Edwardsville, Northumberland | 22456 |
| Heathsville, Northumberland | 22473 |
| Lewisetta, Northumberland | 22511 |
| Lottsburg, Northumberland | 22511 |
| Ophelia, Northumberland | 22530 |
| Reedville, Northumberland | 22539 |
| Walmsley, Northumberland | 22435 |
| Wicomico Church, Northumberland | 22579 |