B21 postcode district

Postcodes and sectors

437 of the district's 787 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 52.50691, -1.94147, which locates the district, not a building.

Companies registered in B21

Companies House lists 2,769 companies with a registered office in B21; 674 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 B21

• Birmingham
• West Midlands
• Sandwell

Roads filed under B21

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.

• Albert Road
• Albion Road
• Alexandra Avenue
• Alexandra Road
• Alfred Road
• Andrew Gardens
• Antrobus Road
• Arthur Road
• Ashwin Road
• Astley Road
• Austin Road
• Avenue Road
• Aylesford Road
• Babington Road
• Baker Street
• Barn Lane
• Belgrave Terrace
• Belmont Road
• Belmont Road East
• Bernhard Drive
• Booth Street
• Boulton Retreat
• Boulton Road
• Boundary Place
• Branksome Avenue
• Brearley Street
• Brewery Street
• Brunswick Gardens
• Brunswick Road
• Bush Grove
• Camp Lane
• Carlton Avenue
• Centenary Drive
• Chantry Road
• Chapel Street
• Clarence Avenue
• Clarence Road
• Clent Road
• College Road
• Conifer Drive
• Copthall Road
• Cradley Croft
• Cranbrook Road
• Cranmore Avenue
• Crick Lane
• Crocketts Avenue
• Crocketts Road
• Cross Street
• Dairy Way
• Dawson Road
• Dora Road
• Douglas Road
• Earlsmead Road
• Elmhurst Road
• Farcroft Avenue
• Farcroft Grove
• Farcroft Road
• Farmers Walk
• Farnham Road
• Fell Grove

Check an address in B21

Check an address in B21

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

curl "https://spaw.co/api/v1/address/streets?country=GB&postal_code=B21" \
  -H "Authorization: Bearer $SPAW_KEY"

Common questions about B21

What does a B21 postcode tell you?

That the address lies in the B21 district of the B (Birmingham) postcode area, and the place OS Open Names most often lists first for its postcodes is Birmingham. The district alone does not place a street: the inward half of the full postcode narrows the address to one of the district's 437 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 B21

• B201.8 km
• B182.1 km
• B662.2 km
• B192.7 km
• B163.3 km
• B673.5 km
• B423.6 km
• B33.6 km
• B23.7 km
• B13.7 km
• B63.8 km
• B44.1 km
• Every district
• How a British address is written
• Check any address

distance between the districts' centroids