CF37 postcode district

Postcodes and sectors

885 of the district's 1,220 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 51.60332, -3.33436, which locates the district, not a building.

Companies registered in CF37

Companies House lists 2,211 companies with a registered office in CF37; 567 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 CF37

• Wales
• Rhondda Cynon Taf
• Pontypridd
• Ynysybwl
• Porth
• Pen-y-coedcae
• Caerffili
• Caerphilly
• Llanwonno

Roads filed under CF37

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.

• Abercynon Road
• Acacia Street
• Aelybryn
• Afon Street
• Albert Road
• Albion Court
• Alexandra Road
• Alexon Way
• Alpha Street
• Ann Street
• Archer Street
• Arfonfab Crescent
• Arran Close
• Ashdown Court
• Ashford Close
• Ashgrove
• Ash Square
• Augustus Street
• Awelfryn
• Bakers Wharf
• Balmoral Close
• Barry Road
• Bassett Street
• Batten Way
• Bedw Road
• Beechwood Street
• Belle Vue Terrace
• Bertha Street
• Berw Road
• Bethel Street
• Bethesda Street
• Beyron Clos
• Beyron Close
• Birchley
• Birchwood Avenue
• Black Road
• Bodwenarth Road
• Bonvilston Road
• Bonvilston Terrace
• Bridge Road
• Bridge Street
• Broadway
• Bron Iestyn Close
• Brookfield
• Brookfield Lane
• Brookside Close
• Brook Street
• Bryn Aur
• Bryn Awel
• Brynderwen
• Brynderwen Road
• Bryn Eglwys
• Bryn Eirw
• Brynfab Road
• Bryn Ilan
• Bryn Llus
• Bryn Olwg
• Bryn Rhedyn
• Buarth-y-Capel
• Burn's Way

Check an address in CF37

Check an address in CF37

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

curl "https://spaw.co/api/v1/address/streets?country=GB&postal_code=CF37" \
  -H "Authorization: Bearer $SPAW_KEY"

Common questions about CF37

What does a CF37 postcode tell you?

That the address lies in the CF37 district of the CF (Cardiff) postcode area, and the place OS Open Names most often lists first for its postcodes is Pontypridd. The district alone does not place a street: the inward half of the full postcode narrows the address to one of the district's 885 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 CF37

• CF384.8 km
• CF396.3 km
• CF467.2 km
• CF457.6 km
• CF838.2 km
• CF408.3 km
• CF828.5 km
• CF158.9 km
• CF729.5 km
• CF4310.0 km
• CF4111.3 km
• NP1211.9 km
• Every district
• How a British address is written
• Check any address

distance between the districts' centroids