BB postcode area
The BB area holds 13 districts and 13,608 live postcodes; its largest place is Burnley.
| District | Live postcodes | Largest place with its centre there |
|---|---|---|
| BB1 | 1,310 | Rishton |
| BB2 | 1,414 | Blackburn |
| BB3 | 931 | Darwen |
| BB4 | 1,336 | Rawtenstall |
| BB5 | 1,552 | Accrington |
| BB6 | 373 | Great Harwood |
| BB7 | 1,228 | Clitheroe |
| BB8 | 785 | Colne |
| BB9 | 1,397 | Nelson |
| BB10 | 891 | Burnley |
| BB11 | 840 | Hameldon Hill |
| BB12 | 978 | Padiham |
| BB18 | 573 | Barnoldswick |
Contains OS data © Crown copyright and database right 2026. Contains Royal Mail data © Royal Mail copyright and database right 2026. Source: Office for National Statistics licensed under the Open Government Licence v3.0. Postcode data is the ONS Postcode Directory, August 2026 edition; counts are live postcodes with a usable location. Northern Ireland postcodes carry a separate licence and are not included; Scotland joins when the site's Scottish coverage does.