What does a CF30 postcode tell you?

That the address lies in the CF30 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 10 live postcodes.

CF30 postcode district

CF30, in the CF (Cardiff) postcode area, has 10 live and 85 terminated postcodes in the ONS Postcode Directory of August 2026, and OS Open Names files no road under it.

postcode area	CF (Cardiff)
live postcodes	10
terminated postcodes	85
sectors	1
roads listed	0
companies registered	1
centroid	51.51965, -3.11960
directory release	2026-08

Postcodes and sectors

10 of the district's 95 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 51.51965, -3.11960, which locates the district, not a building.

sector	live	terminated
CF30 0	10	85

Companies registered in CF30

Companies House lists 1 company with a registered office in CF30 (1 October 2026 snapshot).

Places OS Open Names lists for CF30

Cardiff
Caerdydd
Wales

Roads filed under CF30

OS Open Names files no road under CF30, so a street here cannot be confirmed from the register and the lookup answers about the postcode alone.

Check an address in CF30

Common questions about CF30

What does a CF30 postcode tell you?: That the address lies in the CF30 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 10 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 CF30

CF30.6 km
CF232.6 km
CF244.6 km
CF145.8 km
CF106.2 km
CF117.2 km
NP108.2 km
CF59.6 km
CF8310.1 km
CF1510.6 km
CF6410.9 km
NP2011.1 km
Every district
How a British address is written
Check any address

distance between the districts' centroids

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