Bolton
34 postcode sectors mapped mainly to Bolton. Choose a district or browse the guides below. These are postcode sectors, not named neighbourhood boundaries.
Postcode districts
Area guides
34 sectors
- BL1 1Near Farnworth
- BL1 2Near Farnworth
- BL1 3Near Bolton
- BL1 4Near Bolton
- BL1 5Near Bolton
- BL1 6Near Bolton
- BL1 7Near Bolton
- BL1 8Near Bolton
- BL1 9Near Farnworth
- BL2 1Near Farnworth
- BL2 2Near Bradshaw
- BL2 3Near Bradshaw
- BL2 4Near Bradshaw
- BL2 6Near Bolton
- BL3 1Near Little Lever
- BL3 2Near Farnworth
- BL3 3Near Bolton
- BL3 4Near Bolton
- BL3 5Near Bolton
- BL3 6Near Bolton
- BL4 0Near Bolton
- BL4 4Near Horwich
- BL4 7Near Farnworth
- BL4 8Near Prestolee
- BL4 9Near Farnworth
- BL5 1Near Bolton
- BL5 2Near Westhoughton
- BL5 3Near Westhoughton
- BL6 4Near Bolton
- BL6 5Near Blackrod
- BL6 6Near Horwich
- BL6 9Near Horwich
- BL78 1Near Farnworth
- BL78 7Near Farnworth
Authority grouping uses mapped sector boundaries from the Office for National Statistics, December 2025. It measures boundary area, not the number of addresses or residents. Guide names describe a place near the approximate sector centre.