CF3 postcode district: Cardiff and around

CF3 is a postcode district in Wales, with 922 postcodes in use in 7 sectors. It has postcodes in Cardiff. It is split between 3 councils: Cardiff (837 postcodes), Newport (81) and Caerphilly (4).

Postcodes in use: 922
Sectors: 7
Councils: 3 councils
Places: Cardiff

Source: Office for National Statistics (ONS) Postcode Directory, August 2026, loaded 20 October 2026. See all our data sources

Every postcode in CF3, and which are new since 2020

New since 2020: 32
In use before 2020: 890
Outline: where 5 or more new postcodes since 2020 lie together

Of the 922 postcodes in CF3 that ONS places, 32 are new since 2020 and 890 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. Names in italics are council wards: we hold no town or village names here.

The middle of its postcodes: latitude 51.5206, longitude -3.1113. 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

CF3 0FSNovember 2025 CF3 6BEAugust 2025 CF3 0FQApril 2025 CF3 2AJNovember 2024 CF3 6BGNovember 2024

Where the new postcodes lie together

10 new postcodes since 2020, outlined on the map. CF3 6BE, is the newest of them.
8 new postcodes since 2020, outlined on the map. CF3 3LH, is the newest of them.

What broadband can you get in CF3?

Ofcom reports on 915 of the 922 postcodes in CF3. At 789 of them every home and business can get gigabit broadband, and at 1 some cannot get decent broadband (10 Mbit/s).

Postcodes where every home can get gigabit789 of 915

Postcodes where every home can get superfast860 of 915

Postcodes where some cannot get decent broadband1 of 915

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 checker

Source: Ofcom, Connected Nations, Spring 2026, data for January 2026, Open Government Licence v3.0. How we use it

What do homes sell for in CF3?

Homes in CF3 sold for a typical £250,500 in the 12 months to August 2026, across 408 sales, down 3.3% on the 12 months before, HM Land Registry's figures show.

£250,500 typical price, the 12 months to August 2026

£259,000 12 months to August 2025

▼ down 3.3% on the 12 months before

Detached £366,500 76 sales
Semi-detached £270,000 173 sales
Terraced £226,000 128 sales
Flat or maisonette £130,500 31 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