CF3 6 postcode sector in the CF3 district

CF3 6 is a sector of the CF3 district: every postcode that starts CF3 6. It has 60 postcodes in use.

Not sure what a sector is? UK postcode format explained.

Every postcode in the CF3 6 sector, and which are new since 2020

Map of every postcode in the CF3 6 sector, by new since 2020 Of the 60 postcodes in the CF3 6 sector that ONS places, 13 are new since 2020 and 47 were in use before 2020. One group of new postcodes is outlined: 12 new postcodes since 2020. Places named: Pontprennau and Old St Mellons, Tredegar Park and Marshfield. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 500 m. M4A48(M)A4232 CF3 6AA: before 2020CF3 6AB: before 2020CF3 6AE: before 2020CF3 6AF: before 2020CF3 6AG: before 2020CF3 6AH: before 2020CF3 6AJ: before 2020CF3 6AL: before 2020CF3 6AN: before 2020CF3 6AP: before 2020CF3 6AQ: before 2020CF3 6AR: before 2020CF3 6AS: before 2020CF3 6AT: before 2020CF3 6AW: before 2020CF3 6AY: before 2020CF3 6HX: before 2020CF3 6LP: before 2020CF3 6US: before 2020CF3 6UY: before 2020CF3 6UZ: before 2020CF3 6WA: before 2020CF3 6WQ: before 2020CF3 6XA: before 2020CF3 6XD: before 2020CF3 6XE: before 2020CF3 6XF: before 2020CF3 6XG: before 2020CF3 6XJ: before 2020CF3 6XL: before 2020CF3 6XR: before 2020CF3 6XS: before 2020CF3 6XT: before 2020CF3 6XU: before 2020CF3 6XW: before 2020CF3 6XX: before 2020CF3 6YA: before 2020CF3 6YF: before 2020CF3 6YG: before 2020CF3 6YJ: before 2020CF3 6YN: before 2020CF3 6YP: before 2020CF3 6YQ: before 2020CF3 6YR: before 2020CF3 6YZ: before 2020CF3 6AZ: new since 2020CF3 6BA: new since 2020CF3 6BB: new since 2020CF3 6BD: new since 2020CF3 6BE: new since 2020CF3 6BF: new since 2020CF3 6BG: new since 2020CF3 6YL: new since 2020CF3 6YS: new since 2020CF3 6YT: new since 2020CF3 6YW: new since 2020CF3 6YX: new since 2020CF3 6YY: new since 2020 Pontprennau and Old St MellonsTredegar Park and Marshfield 12 new postcodes since 2020, outlined: this goes to CF3 6BE, the newest of them12 new postcodes since 2020 Map of every postcode in the CF3 6 sector, by new since 2020 Of the 60 postcodes in the CF3 6 sector that ONS places, 13 are new since 2020 and 47 were in use before 2020. One group of new postcodes is outlined: 12 new postcodes since 2020. Places named: Pontprennau and Old St Mellons, Tredegar Park and Marshfield. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 500 m. M4 Pontprennau and Old St MellonsTredegar Park and Marshfield 12 new postcodes since 2020, outlined: this goes to CF3 6BE, the newest of them12 new postcodes since 2020
  • New since 2020: 13
  • In use before 2020: 47
  • Outline: where 5 or more new postcodes since 2020 lie together

Of the 60 postcodes in the CF3 6 sector that ONS places, 13 are new since 2020 and 47 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 200 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.

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 6BEAugust 2025CF3 6BGNovember 2024CF3 6BBMay 2024CF3 6BDMay 2024CF3 6BFMay 2024

Where the new postcodes lie together

  • 12 new postcodes since 2020, outlined on the map. CF3 6BE, is the newest of them.

What do homes sell for in CF3 6?

Homes in CF3 6 sold for a typical £290,000 in the 12 months to August 2026, across 60 sales, down 3.3% on the 12 months before, HM Land Registry's figures show.

£290,000 typical price, the 12 months to August 2026
£299,995 12 months to August 2025
▼ down 3.3% on the 12 months before
  • Detached £368,000 15 sales
  • Semi-detached £289,950 25 sales
  • Terraced £266,000 14 sales
  • Flat or maisonette £180,000 6 sales

Each bar is that kind's typical price, against the most expensive kind here.

Standard sales of homes at market value at the postcodes that start CF3 6. A typical price is the median, the middle sale, given from 5 sales or more.

How we work this out: house prices by postcode

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 CF3 6

Pick a postcode to see its council and MP, broadband, flood risk, what homes sell for, council tax, the nearest schools and stations, and crime around it.

CF3 6AACF3 6ABCF3 6AECF3 6AFCF3 6AGCF3 6AHCF3 6AJCF3 6ALCF3 6ANCF3 6APCF3 6AQCF3 6ARCF3 6ASCF3 6ATCF3 6AUCF3 6AWCF3 6AXCF3 6AYCF3 6AZCF3 6BACF3 6BBCF3 6BDCF3 6BECF3 6BFCF3 6BGCF3 6HXCF3 6LPCF3 6USCF3 6UYCF3 6UZCF3 6WACF3 6WQCF3 6XACF3 6XDCF3 6XECF3 6XFCF3 6XGCF3 6XJCF3 6XLCF3 6XRCF3 6XSCF3 6XTCF3 6XUCF3 6XWCF3 6XXCF3 6YACF3 6YFCF3 6YGCF3 6YJCF3 6YLCF3 6YNCF3 6YPCF3 6YQCF3 6YRCF3 6YSCF3 6YTCF3 6YWCF3 6YXCF3 6YYCF3 6YZ

Source: Office for National Statistics (ONS) Postcode Directory, August 2026, loaded 20 October 2026. Postcodes that have ended are not listed. See all our data sources

What council am I in? The council, borough or local authority for a postcode, and the county council where there is one. What ward am I in? The ward for a postcode, with its council, constituency and parish.

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