| Locality | Postal Code |
|---|---|
| High Catton | YO41 |
| High Gardham | HU17 7RX |
| High Hunsley | HU20 3UR |
| Highfield | YO8 |
| Hilston | HU11 |
| Hive | HU15 2DQ, HU15 2FR, HU15 … |
| Hollym | HU19 |
| Holme-on-Spalding-Moor | YO43 |
| Holme-on-the-Wolds | HU17 7GA, HU17 7PT, HU17 … |
| Holmpton | HU19 |
| Hook | DN14 |
| Hornsea | HU18 |
| Hotham | YO43 |
| Howden | DN14 |
| Howden Dyke | DN14 |
| Huggate | YO42 |
| Humbleton | HU11 |
| Hutton | YO25 |
| Kelk | YO25 8HL |
| Kellythorpe | YO25 |
| Keyingham | HU12 |
| Kilham | YO25 |
| Kilnsea | HU12 |
| Kilnwick | YO25 |
| Kilnwick Percy | YO42 |
| Kilpin | DN14 |