CF31 postcode district

Postcodes and sectors

980 of the district's 1,565 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 51.50894, -3.57879, which locates the district, not a building.

Companies registered in CF31

Companies House lists 2,611 companies with a registered office in CF31; 253 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 CF31

• Pen-y-bont ar Ogwr
• Bridgend
• Wales
• Pen-y-fai
• Hernston
• Court Colman

Roads filed under CF31

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.

• Acland Road
• Acorn Walk
• Adare Street
• Ael-y-Bryn
• All Saints Way
• Allt Dderw
• Angel Street
• Angelton Green
• Angelton Road
• Angleton Road
• Anglia Close
• Ashbrook
• Ash Grove
• Austin Avenue
• Australian Terrace
• Badgers Brook
• Badgers Mead
• Banc-yr-Allt
• Banc Gelli Las
• Banc Gwyn
• Barnes Avenue
• Beddgelert Field
• Bedw Arian
• Beechwood Avenue
• Below the Oak Trees
• Bennett Avenue
• Bennett Street
• Big Hollow
• Bishopswood
• Blaen y Cwm
• Blaen y Ddol
• Blandy Road
• Boulevard De Villenave D'ornon
• Bowham Avenue
• Bracken Way
• Brackla Street
• Brackla Way
• Bradfield Avenue
• Bradfield Road
• Bramble Close
• Brewery Lane
• Briary Way
• Bridgend Road
• Brierley Lane
• Broad Oak Way
• Brocastle Avenue
• Bro Dirion
• Bron Hafod
• Brook Street
• Browning Close
• Bryn Awel
• Bryn Awelon
• Bryn Bragl
• Bryn Cigfran
• Bryn Deri
• Bryn Deri Court
• Bryn Derlwyn
• Bryn Dryslwyn
• Brynglas
• Bryngolau

Check an address in CF31

Check an address in CF31

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

curl "https://spaw.co/api/v1/address/streets?country=GB&postal_code=CF31" \
  -H "Authorization: Bearer $SPAW_KEY"

Common questions about CF31

What does a CF31 postcode tell you?

That the address lies in the CF31 district of the CF (Cardiff) postcode area, and the place OS Open Names most often lists first for its postcodes is Pen-y-bont ar Ogwr. The district alone does not place a street: the inward half of the full postcode narrows the address to one of the district's 980 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 CF31

• CF354.0 km
• CF325.7 km
• CF338.2 km
• CF368.8 km
• CF719.8 km
• CF7212.3 km
• CF3412.4 km
• CF6113.1 km
• CF3914.6 km
• SA1314.8 km
• CF4015.2 km
• CF4116.8 km
• Every district
• How a British address is written
• Check any address

distance between the districts' centroids