CF37 4 postcode sector in the CF37 district

CF37 4 is a sector of the CF37 district: every postcode that starts CF37 4. It has 170 postcodes in use, 6 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 CF37 4 sector, by gigabit broadband

Map of every postcode in the CF37 4 sector, by gigabit broadband Of the 170 postcodes in the CF37 4 sector that ONS places, 61 have no home or business that can get gigabit, 60 have some that can, 47 can all get it and 2 have no Ofcom figure. 3 groups of postcodes without gigabit are outlined: 15 postcodes without gigabit; 9 postcodes without gigabit; 7 postcodes without gigabit. Places named: Ynysybwl. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 500 m. A4054 CF37 4YA: no Ofcom figureCF37 4AD: gigabit for allCF37 4AG: gigabit for allCF37 4DP: gigabit for allCF37 4DQ: gigabit for allCF37 4DS: gigabit for allCF37 4DT: gigabit for allCF37 4DU: gigabit for allCF37 4EB: gigabit for allCF37 4EG: gigabit for allCF37 4EL: gigabit for allCF37 4ER: gigabit for allCF37 4ET: gigabit for allCF37 4EU: gigabit for allCF37 4EY: gigabit for allCF37 4HA: gigabit for allCF37 4HD: gigabit for allCF37 4HF: gigabit for allCF37 4HJ: gigabit for allCF37 4HU: gigabit for allCF37 4HX: gigabit for allCF37 4JB: gigabit for allCF37 4JD: gigabit for allCF37 4JF: gigabit for allCF37 4LJ: gigabit for allCF37 4LT: gigabit for allCF37 4LU: gigabit for allCF37 4NF: gigabit for allCF37 4PL: gigabit for allCF37 4PQ: gigabit for allCF37 4PU: gigabit for allCF37 4PY: gigabit for allCF37 4RA: gigabit for allCF37 4RF: gigabit for allCF37 4RG: gigabit for allCF37 4RH: gigabit for allCF37 4RN: gigabit for allCF37 4RP: gigabit for allCF37 4RR: gigabit for allCF37 4RU: gigabit for allCF37 4RW: gigabit for allCF37 4RY: gigabit for allCF37 4SG: gigabit for allCF37 4AA: some gigabitCF37 4AB: some gigabitCF37 4AE: some gigabitCF37 4AF: some gigabitCF37 4AH: some gigabitCF37 4AN: some gigabitCF37 4DD: some gigabitCF37 4DF: some gigabitCF37 4DG: some gigabitCF37 4DH: some gigabitCF37 4DW: some gigabitCF37 4DY: some gigabitCF37 4EH: some gigabitCF37 4EJ: some gigabitCF37 4EN: some gigabitCF37 4EW: some gigabitCF37 4EX: some gigabitCF37 4HB: some gigabitCF37 4HE: some gigabitCF37 4HG: some gigabitCF37 4HN: some gigabitCF37 4HP: some gigabitCF37 4HY: some gigabitCF37 4HZ: some gigabitCF37 4JA: some gigabitCF37 4JE: some gigabitCF37 4LG: some gigabitCF37 4LH: some gigabitCF37 4LP: some gigabitCF37 4LR: some gigabitCF37 4LY: some gigabitCF37 4NA: some gigabitCF37 4ND: some gigabitCF37 4NE: some gigabitCF37 4NH: some gigabitCF37 4NL: some gigabitCF37 4NN: some gigabitCF37 4NP: some gigabitCF37 4NR: some gigabitCF37 4NT: some gigabitCF37 4NW: some gigabitCF37 4NX: some gigabitCF37 4PD: some gigabitCF37 4PE: some gigabitCF37 4PH: some gigabitCF37 4PN: some gigabitCF37 4PP: some gigabitCF37 4PR: some gigabitCF37 4RB: some gigabitCF37 4RD: some gigabitCF37 4RE: some gigabitCF37 4RL: some gigabitCF37 4RS: some gigabitCF37 4RT: some gigabitCF37 4SB: some gigabitCF37 4SD: some gigabitCF37 4SA: some gigabitCF37 4AP: no gigabitCF37 4AQ: no gigabitCF37 4AR: no gigabitCF37 4AS: no gigabitCF37 4AT: no gigabitCF37 4AU: no gigabitCF37 4AW: no gigabitCF37 4BA: no gigabitCF37 4BB: no gigabitCF37 4BD: no gigabitCF37 4BE: no gigabitCF37 4BN: no gigabitCF37 4BP: no gigabitCF37 4BW: no gigabitCF37 4DA: no gigabitCF37 4DB: no gigabitCF37 4DE: no gigabitCF37 4DJ: no gigabitCF37 4DL: no gigabitCF37 4DN: no gigabitCF37 4DX: no gigabitCF37 4DZ: no gigabitCF37 4EP: no gigabitCF37 4HL: no gigabitCF37 4HR: no gigabitCF37 4HS: no gigabitCF37 4HT: no gigabitCF37 4HW: no gigabitCF37 4LD: no gigabitCF37 4LE: no gigabitCF37 4LL: no gigabitCF37 4LQ: no gigabitCF37 4LW: no gigabitCF37 4LX: no gigabitCF37 4NG: no gigabitCF37 4NJ: no gigabitCF37 4NQ: no gigabitCF37 4PF: no gigabitCF37 4PJ: no gigabitCF37 4RX: no gigabitCF37 4RZ: no gigabitCF37 4SF: no gigabitCF37 4SL: no gigabitCF37 4SP: no gigabitCF37 4SU: no gigabitCF37 4TD: no gigabitCF37 4TH: no gigabitCF37 4TR: no gigabitCF37 4TS: no gigabitCF37 4UA: no gigabitCF37 4UE: no gigabitCF37 4UF: no gigabitCF37 4UG: no gigabitCF37 4UL: no gigabitCF37 4UY: no gigabitCF37 4WX: no gigabitCF37 4AX: no gigabitCF37 4SH: no gigabit Ynysybwl 15 postcodes without gigabit, outlined: this goes to CF37 4UG, the one nearest the middle of them15 postcodes without gigabit9 postcodes without gigabit, outlined: this goes to CF37 4BB, the one nearest the middle of them9 postcodes without gigabit7 postcodes without gigabit, outlined: this goes to CF37 4DZ, the one nearest the middle of them7 postcodes without gigabit Map of every postcode in the CF37 4 sector, by gigabit broadband Of the 170 postcodes in the CF37 4 sector that ONS places, 61 have no home or business that can get gigabit, 60 have some that can, 47 can all get it and 2 have no Ofcom figure. 3 groups of postcodes without gigabit are outlined: 15 postcodes without gigabit; 9 postcodes without gigabit; 7 postcodes without gigabit. Places named: Trallwng, Cilfynydd. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 1 km. TrallwngCilfynydd 9 postcodes without gigabit, outlined: this goes to CF37 4BB, the one nearest the middle of them9 postcodes without gigabit7 postcodes without gigabit, outlined: this goes to CF37 4DZ, the one nearest the middle of them7 postcodes without gigabit
  • No home or business can get gigabit: 61
  • Some can get gigabit: 60
  • Every home and business can get gigabit: 47
  • Ofcom gives no figure: 2
  • Outline: where 5 or more postcodes without gigabit lie together

Of the 170 postcodes in the CF37 4 sector that ONS places, 61 have no home or business that can get gigabit, 60 have some that can, 47 can all get it and 2 have no Ofcom figure.

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. 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.

Source: Office for National Statistics (ONS) Postcode Directory, August 2026, loaded 20 October 2026, the centre point of each postcode; gigabit: Ofcom, Connected Nations, Spring 2026; 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

Postcodes without gigabit

61 postcodes here have no gigabit. These are the 12 first in postcode order.

CF37 4APCF37 4AQCF37 4ARCF37 4ASCF37 4ATCF37 4AUCF37 4AWCF37 4AXCF37 4AYCF37 4BACF37 4BBCF37 4BD

Where the postcodes without gigabit lie together

  • 15 postcodes without gigabit, outlined on the map. CF37 4UG, is the one nearest the middle of them.
  • 9 postcodes without gigabit, outlined on the map. CF37 4BB, is the one nearest the middle of them.
  • 7 postcodes without gigabit, outlined on the map. CF37 4DZ, is the one nearest the middle of them.

What do homes sell for in CF37 4?

Homes in CF37 4 sold for a typical £150,000 in the 12 months to August 2026, across 82 sales, no change on the 12 months before, HM Land Registry's figures show.

£150,000 typical price, the 12 months to August 2026
£150,000 12 months to August 2025
■ no change on the 12 months before
  • Detached £371,000 5 sales
  • Semi-detached £205,000 9 sales
  • Terraced £147,000 66 sales
  • Flat or maisonette 2 sales, too few to price

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 CF37 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

Postcodes in CF37 4

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.

CF37 4AACF37 4ABCF37 4ADCF37 4AECF37 4AFCF37 4AGCF37 4AHCF37 4ALCF37 4ANCF37 4APCF37 4AQCF37 4ARCF37 4ASCF37 4ATCF37 4AUCF37 4AWCF37 4AXCF37 4AYCF37 4BACF37 4BBCF37 4BDCF37 4BECF37 4BNCF37 4BPCF37 4BWCF37 4DACF37 4DBCF37 4DDCF37 4DECF37 4DFCF37 4DGCF37 4DHCF37 4DJCF37 4DLCF37 4DNCF37 4DPCF37 4DQCF37 4DSCF37 4DTCF37 4DUCF37 4DWCF37 4DXCF37 4DYCF37 4DZCF37 4EBCF37 4EGCF37 4EHCF37 4EJCF37 4ELCF37 4ENCF37 4EPCF37 4ERCF37 4ESCF37 4ETCF37 4EUCF37 4EWCF37 4EXCF37 4EYCF37 4HACF37 4HBCF37 4HDCF37 4HECF37 4HFCF37 4HGCF37 4HJCF37 4HLCF37 4HNCF37 4HPCF37 4HRCF37 4HSCF37 4HTCF37 4HUCF37 4HWCF37 4HXCF37 4HYCF37 4HZCF37 4JACF37 4JBCF37 4JDCF37 4JECF37 4JFCF37 4LDCF37 4LECF37 4LFCF37 4LGCF37 4LHCF37 4LJCF37 4LLCF37 4LNCF37 4LPCF37 4LQCF37 4LRCF37 4LTCF37 4LUCF37 4LWCF37 4LXCF37 4LYCF37 4NACF37 4NBCF37 4NDCF37 4NECF37 4NFCF37 4NGCF37 4NHCF37 4NJCF37 4NLCF37 4NNCF37 4NPCF37 4NQCF37 4NRCF37 4NTCF37 4NUCF37 4NWCF37 4NXCF37 4PDCF37 4PECF37 4PFCF37 4PHCF37 4PJCF37 4PLCF37 4PNCF37 4PPCF37 4PQCF37 4PRCF37 4PSCF37 4PTCF37 4PUCF37 4PWCF37 4PYCF37 4RACF37 4RBCF37 4RDCF37 4RECF37 4RFCF37 4RGCF37 4RHCF37 4RLCF37 4RNCF37 4RPCF37 4RRCF37 4RSCF37 4RTCF37 4RUCF37 4RWCF37 4RXCF37 4RYCF37 4RZCF37 4SACF37 4SBCF37 4SDCF37 4SFCF37 4SGCF37 4SHCF37 4SLCF37 4SPCF37 4SUCF37 4TDCF37 4THCF37 4TRCF37 4TSCF37 4TTCF37 4UACF37 4UECF37 4UFCF37 4UGCF37 4UHCF37 4ULCF37 4UYCF37 4WXCF37 4YA

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

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