BL
Postcode areaPostcode area named after Bolton, with 12 districts.
Approximate outline worked out by Open Index from the ONS Postcode Directory: the outline joins its districts’ outlines, each made of the census output areas that hold most of the district’s postcodes.
Radon Affected Area by postcode area
Worked out by Open Index · 2022
About 92% of people in BL live in a 1 km square that the radon atlas marks as a radon Affected Area.
How BL compares
Each dot is a postcode area. The black line marks the middle one.
Every postcode area ranked: median sale price, population, people in radon affected area squares and gigabit broadband coverage.
What is the population of BL?
BL had 403,927 usual residents at the census.
BL is the 45th least populated of 120 in the UK.
Postcode districts in BL
| Name | People (census) | Median sale price | Recorded crime per 1,000 |
|---|---|---|---|
| BL0Ramsbottom, Edenfield | 17,303 | £264,500 | No figure |
| BL1Bolton, Brownlow Fold | 69,343 | £192,250 | No figure |
| BL2Bolton, Tonge Moor | 47,574 | £210,000 | No figure |
| BL3Bolton, Willows | 72,147 | £187,000 | No figure |
| BL4Farnworth, Highfield | 35,271 | £183,500 | No figure |
| BL5Westhoughton, Wingates | 27,422 | £243,000 | No figure |
| BL6Horwich, Lostock | 31,008 | £249,950 | No figure |
| BL7Bolton, Edgworth | 15,135 | £281,000 | No figure |
| BL8Bury, Elton | 36,713 | £260,000 | No figure |
| BL9Bury | 52,011 | £225,000 | No figure |
| BL11Bolton, Springfield | No figure | No figure | No figure |
| BL78Farnworth, Moses Gate | No figure | No figure | No figure |
BL in brief
The BL postcode area, named after Bolton, has 12 postcode districts.
The median price paid for a home in BL was £222,373 in 2025.
BL had 403,927 usual residents at the census.
About 92% of people in BL live in a 1 km square that the radon atlas marks as a radon Affected Area.
In BL, 93.8% of homes and businesses could get gigabit-capable broadband in January 2026.