CF46 postcode district

Postcodes and sectors

349 of the district's 400 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 51.66471, -3.30060, which locates the district, not a building.

Companies registered in CF46

Companies House lists 373 companies with a registered office in CF46; 29 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 CF46

• Wales
• Merthyr Tudful
• Merthyr Tydfil
• Treharris
• Caerffili
• Caerphilly
• Nelson
• Trelewis
• Bedlinog
• Goitre Coed
• Cwmfelin
• Tai'r-heol

Roads filed under CF46

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.

• Ael-y-Bryn
• Ashgrove
• Ashgrove Terrace
• Bargoed Terrace
• Beddoe Terrace
• Bedlinog Terrace
• Bedw Road
• Beechcroft
• Beech Grove
• Beech Tree Way
• Birchgrove Estate
• Bontnewydd Terrace
• Brecon Walk
• Bron Deg
• Brooklands
• Brotalwg
• Bryncelyn
• Bryngerwn Avenue
• Bwlch Carnygelli
• Bwl Road
• Cae'r Gelynnen
• Cae Llwyndu
• Caerphilly Road
• Captains Hill
• Cardiff Road
• Chapel Street
• Cherry Tree Way
• Church Lane
• Claremont Drive
• Clos Bysedd y Cŵn
• Clos Cae Pwll
• Clos Eiddew
• Clos Waun Ceffyl
• Clos yr Ysgol
• Coly Row
• Commercial Street
• Commercial Terrace
• Cross Street
• Cwm Eithin
• Cwrt-y-Faenor
• Cwrt-y-Grug
• Cwrt Harris
• Donald Street
• Dynevor Terrace
• Ebenezer Close
• Edwards Terrace
• Edward Street
• Edwardsville
• Evan Street
• Fair View
• Fell Street
• Ffos Close
• Ffos y Cerridden
• Fiddlers Elbow
• Field Street
• Fir Tree Drive
• Forest Grove
• Forest Road
• Foxglove Close
• Fox Street

Check an address in CF46

Check an address in CF46

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

curl "https://spaw.co/api/v1/address/streets?country=GB&postal_code=CF46" \
  -H "Authorization: Bearer $SPAW_KEY"

Common questions about CF46

What does a CF46 postcode tell you?

That the address lies in the CF46 district of the CF (Cardiff) postcode area, and the place OS Open Names most often lists first for its postcodes is Treharris. The district alone does not place a street: the inward half of the full postcode narrows the address to one of the district's 349 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 CF46

• CF454.3 km
• CF824.6 km
• CF815.7 km
• NP127.1 km
• CF377.2 km
• NP247.4 km
• CF489.9 km
• CF8310.3 km
• CF4310.4 km
• CF4710.9 km
• CF3911.3 km
• CF4011.5 km
• Every district
• How a British address is written
• Check any address

distance between the districts' centroids