The approximate coverage of the postcode districts:
| Postcode district | Post town | Coverage | Local authority area |
|---|---|---|---|
| BB0 | BLACKBURN | Blackburn (Non-geographic postcode - Granby Marketing, BB1) | Blackburn |
| BB1 | BLACKBURN | Blackburn, Bank Hey, Belthorn, Blackamoor, Clayton-le-Dale, Guide, Knuzden, Mellor, Ramsgreave, Rishton, Salesbury, Shadsworth, Sunnybower, Whitebirk, Wilpshire | Blackburn with Darwen/Hyndburn/Ribble Valley |
| BB2 | BLACKBURN | Blackburn, Beardwood, Balderstone, Cherry Tree, Feniscowles, Mellor, Mellor Brook, Mill Hill, Pleasington, Witton, Holly Tree and Griffin | Blackburn with Darwen/Chorley/South Ribble/Ribble Valley |
| BB3 | DARWEN | Darwen, Bank Fold, Eccleshill, Hoddlesden, Lower Darwen, Pickup Bank, Tockholes | Blackburn with Darwen |
| BB4 | ROSSENDALE | Acre, Bent Gate, Haslingden, Helmshore, Rawtenstall | Rossendale |
| BB5 | ACCRINGTON | Accrington, Altham, Baxenden, Church, Clayton-le-Moors, Huncoat, Oswaldtwistle, Rising Bridge | Hyndburn/Rossendale |
| BB6 | BLACKBURN | Dinckley, Great Harwood, Langho | Hyndburn/Ribble Valley |
| BB7 | CLITHEROE | Clitheroe, Barrow, Chatburn, Dunsop Bridge, Gisburn, Hurst Green, Pendleton, Sabden, Slaidburn, Waddington, Whalley, Whitewell, Wiswell | Ribble Valley |
| BB8 | COLNE | Colne, Foulridge, Laneshaw Bridge, Trawden, Winewall, Wycoller | Pendle |
| BB9 | NELSON | Nelson, Barrowford, Blacko, Brierfield, Higherford, Roughlee | Pendle |
| BB10 | BURNLEY | Burnley, Cliviger, Reedley, Worsthorne | Burnley/Pendle |
| BB11 | BURNLEY | Burnley | Burnley |
| BB12 | BURNLEY | Burnley, Barley, Fence, Higham, Padiham, Read, Simonstone, Wheatley Lane | Burnley/Pendle/Ribble Valley |
| BB18 | BARNOLDSWICK | Barnoldswick, Earby, Kelbrook, Salterforth, Sough | Pendle |
| BB94 | BARNOLDSWICK | Earby (Non-geographic postcode - Holiday Cottages Group, BB18) | Pendle |
Read more about this topic: BB Postcode Area