| Locality | Postal Code |
|---|---|
| Haltwhistle | NE49 |
| Hampeth | NE65 9LH, NE65 9LQ |
| Harbottle | NE65 |
| Harle | NE19 |
| Harlow Hill | NE15 |
| Hartburn | NE61 |
| Hartford | NE23 |
| Hartford Bridge | NE22 |
| Harwood | NE61 |
| Haughton | NE46 |
| Hawkwell | NE18 |
| Haydon Bridge | NE47 |
| Healey | NE44 |
| Hebron | NE61 3LA |
| Heddon-on-the-Wall | NE15 |
| Hedley | NE43 |
| Henshaw | NE47 |
| Hepple | NE65 |
| Hepscott | NE61 |
| Hepscott Park | NE61 |
| Hesleyside | NE48 2LB |
| Heugh | NE18 0NH |
| Hexham | NE46 |
| High Buston | NE66 3QH |
| High Callerton | NE20 |
| High Green | NE48 1RP |