| Locality | Post Code |
|---|---|
| Belmont | BL7 |
| Blackburn | BB1, BB2 |
| Cherry Tree | BB2 5NT |
| Darwen | BB3 |
| Eccleshill | BB3 |
| Feniscowles | BB2 |
| Guide | BB1 |
| Hoddlesden | BB3 |
| Livesey | BB3 |
| Lower Darwen | BB3 |
| Pickup Bank | BB3 |
| Pleasington | BB2 |
| Shadsworth Business Park | BB1 |
| Tockholes | BB3 |
| Turton | BL7 |
| Waterside | BB3 |