BB4 postcode district

Postcodes and sectors

1,336 of the district's 1,839 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 53.70390, -2.29178, which locates the district, not a building.

Companies registered in BB4

Companies House lists 2,432 companies with a registered office in BB4; 212 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 BB4

• Rossendale
• Lancashire
• North West
• Rawtenstall
• Haslingden
• Water
• Cowpe
• Hud Hey
• Ewood Bridge
• Acre
• Cribden Side

Roads filed under BB4

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.

• Abbots Close
• Acrefield Drive
• Adelaide Street
• Albert Road
• Albert Street
• Alden Close
• Alden Rise
• Alden Road
• Alder Avenue
• Alder Bank
• Alder Street
• Alderwood
• Alexandria Street
• All Saints Close
• Almond Crescent
• Ambleside Avenue
• Anderton Close
• Andrew Avenue
• Anemone Drive
• Annie Street
• Ash Avenue
• Ash Grove
• Ashworth Lane
• Ashworth Road
• Ashworth Street
• Back Carr Mill Street
• Back Church Street
• Back Constablelee
• Back Elizabeth Street
• Back Hill Street
• Back Lane
• Back Lee Street
• Back Lord Street
• Back Regent Street
• Back Rings Row
• Back York Street
• Bacup Road
• Balmoral Road
• Baltic Road
• Bank Mill Street
• Bankside Close
• Bank Street
• Barley Holme Road
• Barlow Street
• Barnes Avenue
• Barnes Street
• Baron Street
• Barritt Road
• Beaconsfield Street
• Beaumaris Close
• Beckside Close
• Bedford Terrace
• Beech Drive
• Beech Street
• Bell Street
• Belvedere Avenue
• Belvedere Fold
• Bentgate Close
• Bent Street
• Bentwood Road

Check an address in BB4

Check an address in BB4

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

curl "https://spaw.co/api/v1/address/streets?country=GB&postal_code=BB4" \
  -H "Authorization: Bearer $SPAW_KEY"

Common questions about BB4

What does a BB4 postcode tell you?

That the address lies in the BB4 district of the BB (Blackburn) postcode area, and the place OS Open Names most often lists first for its postcodes is Rawtenstall. The district alone does not place a street: the inward half of the full postcode narrows the address to one of the district's 1,336 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 BB4

• OL135.8 km
• BL06.4 km
• BB57.8 km
• BB119.1 km
• BB1211.1 km
• OL1211.2 km
• BL811.2 km
• BB311.5 km
• BB1011.7 km
• BL711.8 km
• BL912.4 km
• OL1412.6 km
• Every district
• How a British address is written
• Check any address

distance between the districts' centroids