CF11 postcode district

Postcodes and sectors

870 of the district's 1,477 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 51.47285, -3.19250, which locates the district, not a building.

Companies registered in CF11

Companies House lists 3,954 companies with a registered office in CF11; 956 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 CF11

• Wales
• Caerdydd
• Cardiff
• Penarth
• Bro Morgannwg
• the Vale of Glamorgan
• Leckwith
• Lecwydd

Roads filed under CF11

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 Street
• Aber Street
• Albert Street
• Albert Walk
• Allerton Street
• Amherst Street
• Amyas Close
• Ann Street
• Arundel Place
• Avoca Place
• Avondale Crescent
• Avondale Gardens
• Avondale Gardens South
• Avondale Road
• Bargoed Street
• Bartley Wilson Way
• Beacon Street
• Beauchamp Street
• Bedwas Street
• Beecher Avenue
• Berthwin Street
• Bessborough Drive
• Bessemer Close
• Bessemer Road
• Bishop Street
• Blackstone Street
• Blaenclydach Place
• Blaenclydach Street
• Blaise Place
• Bloom Street
• Bradford Street
• Bridge Close
• Brindley Road
• Broadacres
• Broadhaven
• Broad Place
• Broadstairs Road
• Broad Street
• Bromfield Street
• Bromsgrove Street
• Brook Street
• Brunel Street
• Burford Gardens
• Burges Place
• Cae Syr Dafydd
• Cambridge Street
• Campbell Drive
• Canton Court
• Cathedral Road
• Chancery Lane
• Channel View Road
• Chatterton Square
• Chester Place
• Chester Street
• Clare Gardens
• Clare Place
• Clare Road
• Clare Street
• Claymore Place
• Clive Lane

Check an address in CF11

Check an address in CF11

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

curl "https://spaw.co/api/v1/address/streets?country=GB&postal_code=CF11" \
  -H "Authorization: Bearer $SPAW_KEY"

Common questions about CF11

What does a CF11 postcode tell you?

That the address lies in the CF11 district of the CF (Cardiff) postcode area, and the place OS Open Names most often lists first for its postcodes is Cardiff. The district alone does not place a street: the inward half of the full postcode narrows the address to one of the district's 870 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 CF11

• CF101.4 km
• CF242.7 km
• CF53.9 km
• CF644.5 km
• CF235.3 km
• CF145.3 km
• CF37.7 km
• CF638.1 km
• CF158.6 km
• CF6211.3 km
• CF8312.8 km
• CF3813.8 km
• Every district
• How a British address is written
• Check any address

distance between the districts' centroids