Districts in the BL area
| District | Main place | Local authority | Sectors | Postcodes |
|---|---|---|---|---|
| BL0 | Ramsbottom | Bury | 2 | 564 |
| BL1 | Bolton | Bolton | 9 | 1,852 |
| BL2 | Bolton | Bolton | 6 | 1,152 |
| BL3 | Bolton | Bolton | 6 | 1,387 |
| BL4 | Farnworth | Bolton | 5 | 850 |
| BL5 | Westhoughton | Bolton | 3 | 706 |
| BL6 | Horwich | Bolton | 5 | 1,019 |
| BL7 | Bolton | Bolton | 3 | 508 |
| BL8 | Bury | Bury | 5 | 1,009 |
| BL9 | Bury | Bury | 6 | 1,333 |
| BL11 | Bolton | Bolton | 1 | 23 |
| BL78 | Farnworth | Bolton | 2 | 5 |
Main places in the BL area
- Bolton
- Bury
- Farnworth
- Horwich
- Westhoughton
- Ramsbottom
- Little Lever
- Kearsley
- Blackrod
- Edenfield
- Wingates
- Edgworth
- Ainsworth
- Atherton
- Heywood
- Bottom o' th' Moor
- Chew Moor
- Summerseat
- Belmont
- Hunger Hill
- Stubbins
- Middle Hulton
- Hawkshaw
- Chapeltown
- Shuttleworth
- Turton Bottoms
- Hart Common
- Brooksbottoms
- Chequerbent
- Holcombe