| Locality | Post Code |
|---|---|
| Little Newsham | DL2 |
| Littlethorpe | SR8 |
| Littletown | DH6 |
| Low Etherley | DL14 |
| Low Pittington | DH6 |
| Low Urpeth | DH2 1BE |
| Low Westwood | NE17 |
| Low Wham | DL13 5JE |
| Low Willington Industrial Estate | DL15 |
| Ludworth | DH6 |
| Lumley Park | DH3 |
| Maiden Law | DH7 |
| Mainsforth | DL17 |
| Malton | DH7 0TH |
| Marwood | DL12 |
| Meadowfield | DH7 |
| Meadowfield Industrial Estate | DH7 |
| Medomsley | DH8 |