CF10 3 postcode sector in the CF10 district

CF10 3 is a sector of the CF10 district: every postcode that starts CF10 3. It has 107 postcodes in use, 39 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 CF10 3 sector, by gigabit broadband

Map of every postcode in the CF10 3 sector, by gigabit broadband Of the 107 postcodes in the CF10 3 sector that ONS places, 29 have no home or business that can get gigabit, 20 have some that can, 39 can all get it and 19 have no Ofcom figure. 2 groups of postcodes without gigabit are outlined: 14 postcodes without gigabit; 5 postcodes without gigabit. Places named: Cathays, Grangetown. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 500 m. A4234 CF10 3RB: no Ofcom figureCF10 3TS: no Ofcom figureCF10 3UB: no Ofcom figureCF10 3WA: no Ofcom figureCF10 3AL: gigabit for allCF10 3AS: gigabit for allCF10 3BN: gigabit for allCF10 3BW: gigabit for allCF10 3BX: gigabit for allCF10 3BY: gigabit for allCF10 3BZ: gigabit for allCF10 3DA: gigabit for allCF10 3DF: gigabit for allCF10 3DN: gigabit for allCF10 3DU: gigabit for allCF10 3DW: gigabit for allCF10 3DZ: gigabit for allCF10 3EB: gigabit for allCF10 3EE: gigabit for allCF10 3EG: gigabit for allCF10 3EH: gigabit for allCF10 3EJ: gigabit for allCF10 3EL: gigabit for allCF10 3EN: gigabit for allCF10 3EP: gigabit for allCF10 3EQ: gigabit for allCF10 3EX: gigabit for allCF10 3EY: gigabit for allCF10 3EZ: gigabit for allCF10 3FG: gigabit for allCF10 3FH: gigabit for allCF10 3FN: gigabit for allCF10 3GA: gigabit for allCF10 3HA: gigabit for allCF10 3HH: gigabit for allCF10 3LB: gigabit for allCF10 3LN: gigabit for allCF10 3QN: gigabit for allCF10 3SG: gigabit for allCF10 3UD: gigabit for allCF10 3UP: gigabit for allCF10 3AF: some gigabitCF10 3AG: some gigabitCF10 3AT: some gigabitCF10 3BA: some gigabitCF10 3BB: some gigabitCF10 3BD: some gigabitCF10 3BG: some gigabitCF10 3BJ: some gigabitCF10 3DD: some gigabitCF10 3DP: some gigabitCF10 3DQ: some gigabitCF10 3DX: some gigabitCF10 3DY: some gigabitCF10 3ED: some gigabitCF10 3EF: some gigabitCF10 3EU: some gigabitCF10 3FA: some gigabitCF10 3FD: some gigabitCF10 3RJ: some gigabitCF10 3AE: no gigabitCF10 3AN: no gigabitCF10 3AP: no gigabitCF10 3AX: no gigabitCF10 3BE: no gigabitCF10 3BH: no gigabitCF10 3BS: no gigabitCF10 3DB: no gigabitCF10 3DG: no gigabitCF10 3DJ: no gigabitCF10 3EA: no gigabitCF10 3ER: no gigabitCF10 3ET: no gigabitCF10 3EW: no gigabitCF10 3NB: no gigabitCF10 3ND: no gigabitCF10 3NL: no gigabitCF10 3NN: no gigabitCF10 3NQ: no gigabitCF10 3NS: no gigabitCF10 3RL: no gigabitCF10 3UN: no gigabitCF10 3AW: no gigabitCF10 3NP: no gigabit CathaysGrangetown 14 postcodes without gigabit, outlined: this goes to CF10 3NP, the one nearest the middle of them14 postcodes without gigabit5 postcodes without gigabit, outlined: this goes to CF10 3AP, the one nearest the middle of them5 postcodes without gigabit Map of every postcode in the CF10 3 sector, by gigabit broadband Of the 107 postcodes in the CF10 3 sector that ONS places, 29 have no home or business that can get gigabit, 20 have some that can, 39 can all get it and 19 have no Ofcom figure. 2 groups of postcodes without gigabit are outlined: 14 postcodes without gigabit; 5 postcodes without gigabit. Places named: Cathays, Grangetown. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 500 m. CathaysGrangetown 5 postcodes without gigabit, outlined: this goes to CF10 3AP, the one nearest the middle of them5 postcodes without gigabit
  • No home or business can get gigabit: 29
  • Some can get gigabit: 20
  • Every home and business can get gigabit: 39
  • Ofcom gives no figure: 19
  • Outline: where 5 or more postcodes without gigabit lie together

Of the 107 postcodes in the CF10 3 sector that ONS places, 29 have no home or business that can get gigabit, 20 have some that can, 39 can all get it and 19 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

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

CF10 3AECF10 3ANCF10 3APCF10 3AQCF10 3AWCF10 3AXCF10 3AYCF10 3BECF10 3BFCF10 3BHCF10 3BQCF10 3BS

Where the postcodes without gigabit lie together

  • 14 postcodes without gigabit, outlined on the map. CF10 3NP, is the one nearest the middle of them.
  • 5 postcodes without gigabit, outlined on the map. CF10 3AP, is the one nearest the middle of them.

What do homes sell for in CF10 3?

Homes in CF10 3 sold for a typical £170,000 in the 12 months to August 2026, across 7 sales, down 50.4% on the 12 months before, HM Land Registry's figures show.

£170,000 typical price, the 12 months to August 2026
£342,500 12 months to August 2025
▼ down 50.4% on the 12 months before
  • Terraced 1 sale, too few to price
  • Flat or maisonette £165,500 6 sales

Standard sales of homes at market value at the postcodes that start CF10 3. 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 CF10 3

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.

CF10 3AECF10 3AFCF10 3AGCF10 3ALCF10 3ANCF10 3APCF10 3AQCF10 3ARCF10 3ASCF10 3ATCF10 3AWCF10 3AXCF10 3AYCF10 3BACF10 3BBCF10 3BDCF10 3BECF10 3BFCF10 3BGCF10 3BHCF10 3BJCF10 3BNCF10 3BQCF10 3BSCF10 3BWCF10 3BXCF10 3BYCF10 3BZCF10 3DACF10 3DBCF10 3DDCF10 3DFCF10 3DGCF10 3DJCF10 3DNCF10 3DPCF10 3DQCF10 3DUCF10 3DWCF10 3DXCF10 3DYCF10 3DZCF10 3EACF10 3EBCF10 3EDCF10 3EECF10 3EFCF10 3EGCF10 3EHCF10 3EJCF10 3ELCF10 3ENCF10 3EPCF10 3EQCF10 3ERCF10 3ETCF10 3EUCF10 3EWCF10 3EXCF10 3EYCF10 3EZCF10 3FACF10 3FDCF10 3FGCF10 3FHCF10 3FJCF10 3FNCF10 3GACF10 3HACF10 3HHCF10 3LBCF10 3LNCF10 3NBCF10 3NDCF10 3NLCF10 3NNCF10 3NPCF10 3NQCF10 3NSCF10 3PGCF10 3PLCF10 3PWCF10 3QNCF10 3RBCF10 3RJCF10 3RLCF10 3RSCF10 3SGCF10 3SXCF10 3TSCF10 3UACF10 3UBCF10 3UDCF10 3UNCF10 3UPCF10 3UWCF10 3WACF10 3WDCF10 3WTCF10 3WXCF10 3XACF10 3XLCF10 3XRCF10 3XSCF10 3XZCF10 3YZCF10 3ZP

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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