| Locality | Postal Code |
|---|---|
| Boosbeck | TS12 |
| Brotton | TS12 |
| Carlin How | TS13 |
| Charltons | TS12 |
| Dormanstown | TS10 5NE |
| Dunsdale | TS14 |
| Easington | TS13 |
| East Loftus | TS13 4LP |
| Eston | TS6 |
| Grangetown | TS6 |
| Guisborough | TS14 |
| Kirkleatham | TS10, TS11 |
| Kirkleatham Business Park | TS10 5RS, TS10 5RT, TS10 … |
| Lazenby | TS6 |
| Lingdale | TS12 |
| Liverton | TS13 |
| Loftus | TS13 |
| Marske-by-the-Sea | TS11 |
| Middlesbrough | TS6 |
| Moorsholm | TS12 |
| New Marske | TS11 |
| New Skelton | TS12 2AG |
| Newton Under Roseberry | TS9 |
| Normanby | TS6 |
| Old Lackenby | TS6 8DN |
| Ormesby | TS7 |