B31 postcode district

Postcodes and sectors

1,164 of the district's 1,506 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 52.40799, -1.97386, which locates the district, not a building.

Companies registered in B31

Companies House lists 1,864 companies with a registered office in B31; 72 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 B31

• West Midlands
• Birmingham
• Bromsgrove
• Worcestershire

Roads filed under B31

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.

• Abbeydale Road
• Ace Street
• Adstone Grove
• Ainsworth Road
• Aire Croft
• Albatross Grove
• Aldersmead Road
• Allens Farm Road
• Alvechurch Close
• Alvechurch Road
• Ambassador Avenue
• Appletree Close
• Ascot Way
• Ash Drive
• Augusta Avenue
• Austin Rise
• Austin Way
• Badsey Close
• Balaams Wood Drive
• Bangham Pit Road
• Barn Meadow Close
• Barnsdale Crescent
• Barron Road
• Bartley Crescent
• Bartley Drive
• Bartley Mews
• Basil Grove
• Basil Road
• Bayford Avenue
• Bayliss Close
• Beach Close
• Bedlam Wood Road
• Beeches Farm Drive
• Beeches Way
• Beech Farm Croft
• Beech Park Road
• Bell Court
• Bellfield
• Bell Hill
• Bell Holloway
• Bell Lane
• Bellwood Road
• Belmont Covert
• Belmont Crescent
• Bentham Court
• Berchelai Avenue
• Berwick Grove
• Besford Grove
• Bidford Road
• Birch Avenue
• Birmingham Road
• Bishops Gate
• Bittell Close
• Blackwell Mews
• Bluebell Croft
• Blue Gate Lane
• Bodenham Road
• Borrowdale Grove
• Borrowdale Road
• Bourn Avenue

Check an address in B31

Check an address in B31

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

curl "https://spaw.co/api/v1/address/streets?country=GB&postal_code=B31" \
  -H "Authorization: Bearer $SPAW_KEY"

Common questions about B31

What does a B31 postcode tell you?

That the address lies in the B31 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 1,164 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 B31

• B382.8 km
• B453.2 km
• B303.5 km
• B293.8 km
• B324.7 km
• B145.8 km
• B176.0 km
• B486.2 km
• B626.8 km
• B476.9 km
• B137.3 km
• B157.3 km
• Every district
• How a British address is written
• Check any address

distance between the districts' centroids