CF3 4 postcode sector in the CF3 district

CF3 4 is a sector of the CF3 district: every postcode that starts CF3 4. It has 120 postcodes in use, 2 of them large-user postcodes. A large-user postcode is one Royal Mail gives to a single address that gets a lot of mail.

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

Every postcode in the CF3 4 sector, and which are new since 2020

Map of every postcode in the CF3 4 sector, by new since 2020 Of the 120 postcodes in the CF3 4 sector that ONS places, 5 are new since 2020 and 115 were in use before 2020. Places named: Llanrumney, Rumney. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 250 m. A48A4161 CF3 4AA: before 2020CF3 4AB: before 2020CF3 4AD: before 2020CF3 4AE: before 2020CF3 4AF: before 2020CF3 4AG: before 2020CF3 4AH: before 2020CF3 4AJ: before 2020CF3 4AL: before 2020CF3 4AN: before 2020CF3 4AP: before 2020CF3 4AQ: before 2020CF3 4AR: before 2020CF3 4AS: before 2020CF3 4AT: before 2020CF3 4AU: before 2020CF3 4AW: before 2020CF3 4AX: before 2020CF3 4AZ: before 2020CF3 4BA: before 2020CF3 4BB: before 2020CF3 4BD: before 2020CF3 4BE: before 2020CF3 4BG: before 2020CF3 4BH: before 2020CF3 4BJ: before 2020CF3 4BL: before 2020CF3 4BN: before 2020CF3 4BP: before 2020CF3 4BQ: before 2020CF3 4BR: before 2020CF3 4BS: before 2020CF3 4BT: before 2020CF3 4BU: before 2020CF3 4BW: before 2020CF3 4BX: before 2020CF3 4BY: before 2020CF3 4BZ: before 2020CF3 4DA: before 2020CF3 4DB: before 2020CF3 4DD: before 2020CF3 4DF: before 2020CF3 4DJ: before 2020CF3 4DL: before 2020CF3 4DN: before 2020CF3 4DP: before 2020CF3 4DQ: before 2020CF3 4DR: before 2020CF3 4DS: before 2020CF3 4DT: before 2020CF3 4DU: before 2020CF3 4DW: before 2020CF3 4DX: before 2020CF3 4DY: before 2020CF3 4DZ: before 2020CF3 4EA: before 2020CF3 4EB: before 2020CF3 4ED: before 2020CF3 4EE: before 2020CF3 4EF: before 2020CF3 4EG: before 2020CF3 4EH: before 2020CF3 4EJ: before 2020CF3 4EL: before 2020CF3 4EN: before 2020CF3 4EP: before 2020CF3 4EQ: before 2020CF3 4ER: before 2020CF3 4ES: before 2020CF3 4FA: before 2020CF3 4FB: before 2020CF3 4FD: before 2020CF3 4FE: before 2020CF3 4FF: before 2020CF3 4FG: before 2020CF3 4FH: before 2020CF3 4FT: before 2020CF3 4FU: before 2020CF3 4HA: before 2020CF3 4HB: before 2020CF3 4HD: before 2020CF3 4HE: before 2020CF3 4HF: before 2020CF3 4HG: before 2020CF3 4HH: before 2020CF3 4HJ: before 2020CF3 4HL: before 2020CF3 4HN: before 2020CF3 4HP: before 2020CF3 4HR: before 2020CF3 4JA: before 2020CF3 4JB: before 2020CF3 4JD: before 2020CF3 4JE: before 2020CF3 4JF: before 2020CF3 4JG: before 2020CF3 4JH: before 2020CF3 4JJ: before 2020CF3 4JL: before 2020CF3 4JN: before 2020CF3 4JP: before 2020CF3 4JQ: before 2020CF3 4JR: before 2020CF3 4JS: before 2020CF3 4LH: before 2020CF3 4LJ: before 2020CF3 4LL: before 2020CF3 4LQ: before 2020CF3 4LR: before 2020CF3 4LS: before 2020CF3 4TA: before 2020CF3 4TB: before 2020CF3 4TD: before 2020CF3 4TE: before 2020CF3 4ZP: before 2020CF3 4BF: new since 2020CF3 4DE: new since 2020CF3 4DG: new since 2020CF3 4DH: new since 2020CF3 4TG: new since 2020 LlanrumneyRumney Map of every postcode in the CF3 4 sector, by new since 2020 Of the 120 postcodes in the CF3 4 sector that ONS places, 5 are new since 2020 and 115 were in use before 2020. Places named: Llanrumney, Rumney. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 500 m. A48 LlanrumneyRumney
  • New since 2020: 5
  • In use before 2020: 115

Of the 120 postcodes in the CF3 4 sector that ONS places, 5 are new since 2020 and 115 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. No boundary is drawn. 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

What do homes sell for in CF3 4?

Homes in CF3 4 sold for a typical £227,000 in the 12 months to August 2026, across 69 sales, down 16.5% on the 12 months before, HM Land Registry's figures show.

£227,000 typical price, the 12 months to August 2026
£272,000 12 months to August 2025
▼ down 16.5% on the 12 months before
  • Detached 4 sales, too few to price
  • Semi-detached £277,500 34 sales
  • Terraced £193,000 20 sales
  • Flat or maisonette £129,000 11 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 4. 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

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.

Check a postcode

Something wrong on this page? Report an error and we will check it against the source.