BL11 postcode district: Bolton and around

BL11 is a postcode district in England, with 23 postcodes in use in 1 sector. It has postcodes in Bolton. Its council is Bolton.

Postcodes in use
23
Sectors
1
Council
Bolton
Places
Bolton

Source: Office for National Statistics (ONS) Postcode Directory, August 2026, loaded 20 October 2026. See all our data sources

Every postcode in BL11, by flood risk

Map of every postcode in BL11, by flood risk Of the 23 postcodes in BL11 that ONS places, 23 are not on the Environment Agency's at-risk list. Places named: Queens Park & Central. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 250 m. A666A579 BL11 1AF: not on the flood risk listBL11 1XY: not on the flood risk list Queens Park & Central Map of every postcode in BL11, by flood risk Of the 23 postcodes in BL11 that ONS places, 23 are not on the Environment Agency's at-risk list. Places named: Queens Park & Central. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 250 m. A579 Queens Park & Central
  • A home or business at high risk: 0
  • At medium risk at worst: 0
  • At low risk at worst: 0
  • At very low risk only: 0
  • Not on the at-risk list: 23

Of the 23 postcodes in BL11 that ONS places, 23 are not on the Environment Agency's at-risk list.

Each mark is a postcode's centre point as ONS gives it, not a building. Press one to see its postcode and open its page. No boundary is drawn. Where marks overlap, the one first in the key is drawn; the counts include every postcode. Names in italics are council wards: we hold no town or village names here.

The middle of its postcodes: latitude 53.5724, longitude -2.4255. Open this area on OpenStreetMap

Source: Office for National Statistics (ONS) Postcode Directory, August 2026, loaded 20 October 2026, the centre point of each postcode; flood risk: Environment Agency, published 6 July 2026; roads, rivers and built-up areas: Contains OS data © Crown copyright and database right 2026. Drawn by us. Street map: Ordnance Survey, OS Open Zoomstack, Open Government Licence v3.0, drawn with MapLibre. How we use them

Is BL11 at risk of flooding?

None of the 23 postcodes in BL11 is on the Environment Agency's list of postcodes with a home or business in an area at risk of flooding from rivers or the sea.

Homes and businesses in an area at risk of flooding from rivers or the sea, as the Environment Agency counts them, added up over the postcodes. It is for the land, not each building, and leaves out surface water, groundwater and sewers. Each postcode page has its own figures and its flood warning areas.

Source: Environment Agency, Risk of Flooding from Rivers and Sea (postcodes in areas at risk), published 6 July 2026, Open Government Licence v3.0. How we use it

Postcodes in BL11

Pick a sector, then a postcode. A sector is the district plus the next digit.

BL11 123 postcodes
UK postcode format explained

Places in BL11

Towns and villages with postcodes in BL11, and how many each has here.

Bolton postcodes,23

Who covers BL11

How many of the district's postcodes in use fall under each council, constituency and police force area.

Councils

What council am I in?

Constituencies

  • Bolton South and Walkden22
  • Bolton North East1

Police force areas

  • Greater Manchester23

Next to BL11

BL9 postcode district BL78 postcode district All BL districts Bolton postcodes

"Next to" is by number: the districts before and after BL11 in the BL area.

Check a postcode

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