BL3 postcode district

Postcodes and sectors

1,387 of the district's 1,822 postcodes are live in the ONS Postcode Directory of August 2026. A postcode directory says whether a code is in use, never who is there. The live postcodes centre on 53.56459, -2.43181, which locates the district, not a building.

Companies registered in BL3

Companies House lists 5,302 companies with a registered office in BL3; 457 of them at addresses shared by 25 or more companies (1 October 2026 snapshot). 25 is the count at which the address lookup reports a company cluster.

Places OS Open Names lists for BL3

• North West
• Bolton
• Little Lever
• Hunger Hill
• Farnworth
• Bury

Roads filed under BL3

Named roads first, then numbered ones. A road is filed under one district even where it runs through several, so a street missing here may be listed under a neighbouring district — which is why the address lookup never calls a British street absent. Great Britain has no open register of buildings, so a listed road never means a building on it exists.

• Abbey Close
• Abbott Street
• Adam Street
• Addington Road
• Adelaide Street
• Ainsdale Road
• Ainsworth Road
• Aintree Road
• Alberta Street
• Albert Street
• Albion Street
• Alder Street
• Aldersyde Street
• Aldred Street
• Aldsworth Drive
• Alexandra Street
• Alfred Street
• Alice Street
• Allen Street
• Allsopp Street
• Alma Street
• Alston Street
• Amberley Close
• Ancroft Gardens
• Anfield Road
• Anglia Grove
• Annis Road
• Aqueduct Road
• Argo Street
• Arlington Street
• Armadale Road
• Arran Close
• Arthur Street
• Artillery Street
• Ascot Road
• Ashbank Avenue
• Ashbury Close
• Ashdale Avenue
• Asher Street
• Ashton Street
• Ashworth Avenue
• Asia Street
• Atholl Close
• Atkinson Avenue
• Auberson Road
• Auburn Street
• Augustus Street
• Back Alder Street
• Back Alexandra Street
• Back Alfred Street
• Back Alice Street
• Back Alston Street
• Back Anglia Grove
• Back Annis Road
• Back Argo Street
• Back Arlington Street
• Back Ashton Street
• Back Auburn Street
• Back Augustus Street
• Back Augustus Street West

Check an address in BL3

Check an address in BL3

The same road list through the API, from the outward code alone:

curl "https://spaw.co/api/v1/address/streets?country=GB&postal_code=BL3" \
  -H "Authorization: Bearer $SPAW_KEY"

Common questions about BL3

What does a BL3 postcode tell you?

That the address lies in the BL3 district of the BL (Bolton) postcode area, and the place OS Open Names most often lists first for its postcodes is Bolton. The district alone does not place a street: the inward half of the full postcode narrows the address to one of the district's 1,387 live postcodes.

Where the counts come from

• ons-postcode-directory · version 2026-08 · Contains ONS, OS and Royal Mail data © Crown copyright and database right 2026, Open Government Licence v3.0. Northern Ireland postcodes are excluded: their reuse needs a Land & Property Services licence.
• os-open-names · version 2026-11-01 · Contains OS data © Crown copyright and database right 2026, Open Government Licence v3.0.
• uk-companies-house · version 2026-10-01 · Companies House free company data product, Open Government Licence v3.0

What each figure means, and what a district page never says, is set out in Reading a British postcode district page; the glossary defines a postcode district, a postcode area, a postcode directory and a street register.

Data synced on 2026-11-01: the newest version among the datasets listed above.

Districts nearest BL3

• BL111.0 km
• BL781.6 km
• BL42.8 km
• BL13.0 km
• M383.6 km
• BL23.6 km
• BL55.8 km
• M465.9 km
• M285.9 km
• M266.4 km
• M296.5 km
• BL77.5 km
• Every district
• How a British address is written
• Check any address

distance between the districts' centroids