| Locality | Post Code |
|---|---|
| Gunthorpe | DN9 |
| Haxey | DN9 |
| Haxey Carr | DN9 |
| Haxey Junction | DN9 |
| Heckdyke | DN10 4BE |
| Hibaldstow | DN20 |
| High Burnham | DN9 1DD |
| High Risby | DN15 |
| High Santon | DN15 |
| Hoe Hill | DN18 5RD |
| Holme | DN16 |
| Horkstow | DN18 |
| Howsham | LN7 |
| Humber Bridge Industrial Estate | DN18 5RN, DN18 5RP |
| Humberside International Airport | DN39 6YH |
| Keadby | DN17 |
| Kelfield | DN9 |
| Kirmington | DN39 |
| Kirton Lindsey | DN21 |
| Little Redbourne | DN21 4QL |
| Low Burnham | DN9 |
| Low Risby | DN15 0BX |
| Low Santon | DN15 0DF |
| Luddington | DN17 |
| Manton | DN21 4JT |
| Medge Hall | DN8 |