| Locality | Postal Code |
|---|---|
| Brierton | TS22 5PP |
| Claxton | TS22 |
| Dalton Piercy | TS27 |
| Elwick | TS27 |
| Greatham | TS25 |
| Hart | TS27 |
| Hart Village | TS27 |
| Hartlepool | TS24, TS25, TS26, TS27 |
| Newton Bewley | TS22 |
| Park View Industrial Estate | TS25 1PE |
| Queens Meadow Business Park | TS25 |
| Seaton Carew | TS25 |
| The Headland | TS24 0PR |