CF23 postcode district: Cardiff and around
CF23 is a postcode district in Wales, with 908 postcodes in use in 6 sectors. It has postcodes in Cardiff. Its council is Cardiff.
Source: Office for National Statistics (ONS) Postcode Directory, August 2026, loaded 20 October 2026. See all our data sources
Every postcode in CF23, and which are new since 2020
- New since 2020: 20
- In use before 2020: 888
- Outline: where 5 or more new postcodes since 2020 lie together
Of the 908 postcodes in CF23 that ONS places, 20 are new since 2020 and 888 were in use before 2020.
Each mark is a postcode's centre point as ONS gives it, not a building. Press one to see its postcode and open its page. New since 2020 means it came into use in January 2020 or later. A dashed outline shows where 5 or more lie within 150 metres of each other. It is not a boundary, and no boundary is drawn. Where marks overlap, the one first in the key is drawn; the counts include every postcode.
The middle of its postcodes: latitude 51.5145, longitude -3.1556. Open this area on OpenStreetMap
Source: Office for National Statistics (ONS) Postcode Directory, August 2026, loaded 20 October 2026, the centre point of each postcode; when each came into use: the same directory; roads, rivers and built-up areas: Contains OS data © Crown copyright and database right 2026. Drawn by us. Street map: Ordnance Survey, OS Open Zoomstack, Open Government Licence v3.0, drawn with MapLibre. How we use them
The 5 newest postcodes
Where the new postcodes lie together
- 11 new postcodes since 2020, outlined on the map. CF23 0NB, is the newest of them.
What broadband can you get in CF23?
Ofcom reports on 873 of the 908 postcodes in CF23. At 760 of them every home and business can get gigabit broadband.
Ofcom gives each postcode's share of homes and businesses, not how many there are, so these count postcodes. Each postcode page has its own figures. A provider's checker answers for one address.
Check one address on Ofcom's checkerSource: Ofcom, Connected Nations, Spring 2026, data for January 2026, Open Government Licence v3.0. How we use it
What do homes sell for in CF23?
Homes in CF23 sold for a typical £281,750 in the 12 months to August 2026, across 454 sales, down 6.1% on the 12 months before, HM Land Registry's figures show.
- Detached £520,000 92 sales
- Semi-detached £315,000 111 sales
- Terraced £245,000 160 sales
- Flat or maisonette £175,000 91 sales
Each bar is that kind's typical price, against the most expensive kind here.
Standard sales of homes at market value. A typical price is the median, the middle sale. Sales take weeks to be registered, so the last month or two are incomplete. Each postcode page gives the figure for its own postcode sector.
Source: HM Land Registry Price Paid Data, files dated 28 September 2026. Contains HM Land Registry data © Crown copyright and database right 2021. This data is licensed under the Open Government Licence v3.0. How we use it
Postcodes in CF23
Pick a sector, then a postcode. A sector is the district plus the next digit.
Places in CF23
Towns and villages with postcodes in CF23, and how many each has here.
Who covers CF23
How many of the district's postcodes in use fall under each council, constituency and police force area.
Councils
- Cardiff908
Constituencies
- Cardiff East765
- Cardiff North143
Police force areas
- South Wales908
Next to CF23
"Next to" is by number: the districts before and after CF23 in the CF area.
Check a postcode
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