| Locality | Postal Code |
|---|---|
| Postal/ZIP Codes in Ashby-Cum-Fenby | DN37 |
| Postal/ZIP Codes in Aylesby | DN37 |
| Postal/ZIP Codes in Barnoldby-Le-Beck | DN37 |
| Postal/ZIP Codes in Beelsby | DN37 |
| Postal/ZIP Codes in Beesby | DN36 5RP |
| Postal/ZIP Codes in Bradley | DN37 |
| Postal/ZIP Codes in Brigsley | DN37 |
| Postal/ZIP Codes in Cleethorpes | DN35 |
| Postal/ZIP Codes in East Ravendale | DN37 |
| Postal/ZIP Codes in Europarc | DN37 9TZ |
| Postal/ZIP Codes in Great Coates | DN37 |
| Postal/ZIP Codes in Grimsby | DN31, DN32, DN33, DN34, DN37 |
| Postal/ZIP Codes in Habrough | DN40 |
| Postal/ZIP Codes in Hatcliffe | DN37 |
| Postal/ZIP Codes in Hawerby | DN36 5PX |
| Postal/ZIP Codes in Healing | DN41 |
| Postal/ZIP Codes in Humberston | DN36 |
| Postal/ZIP Codes in Immingham | DN40 |
| Postal/ZIP Codes in Immingham Dock | DN40 |
| Postal/ZIP Codes in Irby | DN37 |
| Postal/ZIP Codes in Laceby | DN37 |
| Postal/ZIP Codes in Little London | DN41 |
| Postal/ZIP Codes in New Waltham | DN36 |
| Postal/ZIP Codes in Old Clee | DN32 8LR, DN32 8NB |
| Postal/ZIP Codes in Scartho | DN33 |
| Postal/ZIP Codes in Scartho Top | DN33 |