| Locality | Postal Code |
|---|---|
| Postal/ZIP Codes in Brownieside | NE67 5HW |
| Postal/ZIP Codes in Brunton | NE66 3HQ |
| Postal/ZIP Codes in Burradon | NE65 |
| Postal/ZIP Codes in Byrness Village | NE19 |
| Postal/ZIP Codes in Bywell | NE43 |
| Postal/ZIP Codes in Callaly | NE66 |
| Postal/ZIP Codes in Cambo | NE61 |
| Postal/ZIP Codes in Cambois | NE24 |
| Postal/ZIP Codes in Capheaton | NE19 |
| Postal/ZIP Codes in Carrshield | NE47 |
| Postal/ZIP Codes in Carterway Heads | DH8 |
| Postal/ZIP Codes in Cartington | NE65 |
| Postal/ZIP Codes in Catcleugh | NE19 |
| Postal/ZIP Codes in Catton | NE47 |
| Postal/ZIP Codes in Causey Park | NE61 |
| Postal/ZIP Codes in Cawburn | NE49 9PL |
| Postal/ZIP Codes in Charlton | NE48 1PE |
| Postal/ZIP Codes in Chathill | NE67 |
| Postal/ZIP Codes in Chatton | NE66 |
| Postal/ZIP Codes in Cheeseburn Grange | NE18 0PT |
| Postal/ZIP Codes in Chesterwood | NE47 6HW |
| Postal/ZIP Codes in Chillingham | NE66 |
| Postal/ZIP Codes in Chollerford | NE46 |
| Postal/ZIP Codes in Chollerton | NE46 |
| Postal/ZIP Codes in Choppington | NE62 |
| Postal/ZIP Codes in Christon Bank | NE66 |