CF46 postcode district: Treharris and around

CF46 is a postcode district in Wales, with 349 postcodes in use in 2 sectors. It has postcodes in Treharris, Nelson, Caerphilly and Trelewis. It is split between 2 councils: Merthyr Tydfil (253 postcodes) and Caerphilly (96).

Postcodes in use
349
Sectors
2
Councils
2 councils
Places
3 places

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

Every postcode in CF46, by gigabit broadband

Map of every postcode in CF46, by gigabit broadband Of the 349 postcodes in CF46 that ONS places, 162 have no home or business that can get gigabit, 64 have some that can, 121 can all get it and 2 have no Ofcom figure. 6 groups of postcodes without gigabit are outlined: 36 postcodes without gigabit; 35 postcodes without gigabit; 17 postcodes without gigabit; 11 postcodes without gigabit; 8 postcodes without gigabit; 7 postcodes without gigabit. Places named: Treharris, Ystrad Mynach, Abercynon, Nelson, Caerphilly, Pen-pedair-heol, Aberfan. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 1 km. A470A4054A4059 CF46 5AQ: no Ofcom figureCF46 6BF: no Ofcom figureCF46 5AA: gigabit for allCF46 5EB: gigabit for allCF46 5ER: gigabit for allCF46 5EU: gigabit for allCF46 5EX: gigabit for allCF46 5HA: gigabit for allCF46 5HD: gigabit for allCF46 5HL: gigabit for allCF46 5HN: gigabit for allCF46 5HT: gigabit for allCF46 5HU: gigabit for allCF46 5HW: gigabit for allCF46 5HX: gigabit for allCF46 5LF: gigabit for allCF46 5LG: gigabit for allCF46 5LN: gigabit for allCF46 5PD: gigabit for allCF46 5PG: gigabit for allCF46 5PR: gigabit for allCF46 5PT: gigabit for allCF46 5RD: gigabit for allCF46 5RE: gigabit for allCF46 5RG: gigabit for allCF46 5RJ: gigabit for allCF46 5RL: gigabit for allCF46 5RW: gigabit for allCF46 5RX: gigabit for allCF46 5RY: gigabit for allCF46 5RZ: gigabit for allCF46 6AB: gigabit for allCF46 6AL: gigabit for allCF46 6AP: gigabit for allCF46 6AQ: gigabit for allCF46 6AR: gigabit for allCF46 6AS: gigabit for allCF46 6AU: gigabit for allCF46 6AY: gigabit for allCF46 6AZ: gigabit for allCF46 6BA: gigabit for allCF46 6BB: gigabit for allCF46 6BD: gigabit for allCF46 6BE: gigabit for allCF46 6BG: gigabit for allCF46 6BN: gigabit for allCF46 6BP: gigabit for allCF46 6BS: gigabit for allCF46 6BT: gigabit for allCF46 6DA: gigabit for allCF46 6DB: gigabit for allCF46 6DD: gigabit for allCF46 6DE: gigabit for allCF46 6DG: gigabit for allCF46 6DJ: gigabit for allCF46 6DW: gigabit for allCF46 6DY: gigabit for allCF46 6EE: gigabit for allCF46 6EF: gigabit for allCF46 6EJ: gigabit for allCF46 6EQ: gigabit for allCF46 6ET: gigabit for allCF46 6EZ: gigabit for allCF46 6FA: gigabit for allCF46 6HH: gigabit for allCF46 6HP: gigabit for allCF46 6HQ: gigabit for allCF46 6HS: gigabit for allCF46 6HT: gigabit for allCF46 6HU: gigabit for allCF46 6HX: gigabit for allCF46 6HY: gigabit for allCF46 6HZ: gigabit for allCF46 6JA: gigabit for allCF46 6JB: gigabit for allCF46 6JE: gigabit for allCF46 6JF: gigabit for allCF46 6JJ: gigabit for allCF46 6JL: gigabit for allCF46 6JN: gigabit for allCF46 6LA: gigabit for allCF46 6LB: gigabit for allCF46 6LE: gigabit for allCF46 6LF: gigabit for allCF46 6LS: gigabit for allCF46 6LU: gigabit for allCF46 6NE: gigabit for allCF46 6NF: gigabit for allCF46 6NH: gigabit for allCF46 6NJ: gigabit for allCF46 6NL: gigabit for allCF46 6NP: gigabit for allCF46 6NQ: gigabit for allCF46 6NR: gigabit for allCF46 6NS: gigabit for allCF46 6NU: gigabit for allCF46 6NW: gigabit for allCF46 6NY: gigabit for allCF46 6PB: gigabit for allCF46 6PG: gigabit for allCF46 6PN: gigabit for allCF46 6PQ: gigabit for allCF46 6RH: gigabit for allCF46 6RN: gigabit for allCF46 6RS: gigabit for allCF46 6RT: gigabit for allCF46 6SD: gigabit for allCF46 6UD: gigabit for allCF46 5AB: some gigabitCF46 5BJ: some gigabitCF46 5BN: some gigabitCF46 5EA: some gigabitCF46 5ET: some gigabitCF46 5HE: some gigabitCF46 5HG: some gigabitCF46 5HH: some gigabitCF46 5HP: some gigabitCF46 5HR: some gigabitCF46 5HS: some gigabitCF46 5PY: some gigabitCF46 5RH: some gigabitCF46 5RN: some gigabitCF46 5RP: some gigabitCF46 6AD: some gigabitCF46 6AF: some gigabitCF46 6AH: some gigabitCF46 6AN: some gigabitCF46 6AT: some gigabitCF46 6AW: some gigabitCF46 6DH: some gigabitCF46 6DN: some gigabitCF46 6DU: some gigabitCF46 6EA: some gigabitCF46 6EB: some gigabitCF46 6ED: some gigabitCF46 6EP: some gigabitCF46 6HB: some gigabitCF46 6HD: some gigabitCF46 6HF: some gigabitCF46 6HL: some gigabitCF46 6HN: some gigabitCF46 6JH: some gigabitCF46 6LR: some gigabitCF46 6ND: some gigabitCF46 6NG: some gigabitCF46 6NT: some gigabitCF46 6PD: some gigabitCF46 6PE: some gigabitCF46 6PH: some gigabitCF46 6PJ: some gigabitCF46 6PR: some gigabitCF46 6RE: some gigabitCF46 6RG: some gigabitCF46 6RL: some gigabitCF46 6RW: some gigabitCF46 6RY: some gigabitCF46 6SA: some gigabitCF46 6SB: some gigabitCF46 6SE: some gigabitCF46 6SF: some gigabitCF46 6TG: some gigabitCF46 6TN: some gigabitCF46 6TP: some gigabitCF46 6TR: some gigabitCF46 6UA: some gigabitCF46 5RB: some gigabitCF46 6TY: some gigabitCF46 5AD: no gigabitCF46 5AE: no gigabitCF46 5AF: no gigabitCF46 5AG: no gigabitCF46 5AH: no gigabitCF46 5AJ: no gigabitCF46 5AL: no gigabitCF46 5AN: no gigabitCF46 5AP: no gigabitCF46 5AR: no gigabitCF46 5AS: no gigabitCF46 5AT: no gigabitCF46 5AU: no gigabitCF46 5AW: no gigabitCF46 5AY: no gigabitCF46 5BA: no gigabitCF46 5BB: no gigabitCF46 5BD: no gigabitCF46 5BE: no gigabitCF46 5BH: no gigabitCF46 5BL: no gigabitCF46 5BP: no gigabitCF46 5BS: no gigabitCF46 5BT: no gigabitCF46 5BU: no gigabitCF46 5BW: no gigabitCF46 5BZ: no gigabitCF46 5DA: no gigabitCF46 5DB: no gigabitCF46 5DD: no gigabitCF46 5DF: no gigabitCF46 5DG: no gigabitCF46 5DH: no gigabitCF46 5DL: no gigabitCF46 5DP: no gigabitCF46 5DR: no gigabitCF46 5ED: no gigabitCF46 5EF: no gigabitCF46 5EG: no gigabitCF46 5EH: no gigabitCF46 5EL: no gigabitCF46 5EN: no gigabitCF46 5EP: no gigabitCF46 5HJ: no gigabitCF46 5HQ: no gigabitCF46 5HY: no gigabitCF46 5LA: no gigabitCF46 5LB: no gigabitCF46 5LD: no gigabitCF46 5LJ: no gigabitCF46 5LP: no gigabitCF46 5LQ: no gigabitCF46 5LR: no gigabitCF46 5LS: no gigabitCF46 5LT: no gigabitCF46 5LW: no gigabitCF46 5LX: no gigabitCF46 5LY: no gigabitCF46 5NA: no gigabitCF46 5NB: no gigabitCF46 5ND: no gigabitCF46 5NE: no gigabitCF46 5NF: no gigabitCF46 5NG: no gigabitCF46 5NJ: no gigabitCF46 5NL: no gigabitCF46 5NN: no gigabitCF46 5NP: no gigabitCF46 5NQ: no gigabitCF46 5NR: no gigabitCF46 5NS: no gigabitCF46 5NT: no gigabitCF46 5NU: no gigabitCF46 5NW: no gigabitCF46 5NX: no gigabitCF46 5NZ: no gigabitCF46 5PA: no gigabitCF46 5PB: no gigabitCF46 5PE: no gigabitCF46 5PF: no gigabitCF46 5PH: no gigabitCF46 5PJ: no gigabitCF46 5PL: no gigabitCF46 5PN: no gigabitCF46 5PP: no gigabitCF46 5PQ: no gigabitCF46 5PU: no gigabitCF46 5RA: no gigabitCF46 5RT: no gigabitCF46 5RU: no gigabitCF46 6AA: no gigabitCF46 6AE: no gigabitCF46 6AJ: no gigabitCF46 6BQ: no gigabitCF46 6BU: no gigabitCF46 6BW: no gigabitCF46 6DL: no gigabitCF46 6DQ: no gigabitCF46 6DR: no gigabitCF46 6DS: no gigabitCF46 6DT: no gigabitCF46 6EH: no gigabitCF46 6EN: no gigabitCF46 6ER: no gigabitCF46 6EU: no gigabitCF46 6EW: no gigabitCF46 6EX: no gigabitCF46 6HA: no gigabitCF46 6HE: no gigabitCF46 6HG: no gigabitCF46 6HJ: no gigabitCF46 6LG: no gigabitCF46 6LL: no gigabitCF46 6LN: no gigabitCF46 6LP: no gigabitCF46 6LW: no gigabitCF46 6LY: no gigabitCF46 6NX: no gigabitCF46 6PF: no gigabitCF46 6PL: no gigabitCF46 6PP: no gigabitCF46 6PS: no gigabitCF46 6PW: no gigabitCF46 6PX: no gigabitCF46 6RD: no gigabitCF46 6RF: no gigabitCF46 6SG: no gigabitCF46 6SH: no gigabitCF46 6SJ: no gigabitCF46 6SL: no gigabitCF46 6SN: no gigabitCF46 6ST: no gigabitCF46 6SW: no gigabitCF46 6TA: no gigabitCF46 6TB: no gigabitCF46 6TD: no gigabitCF46 6TE: no gigabitCF46 6TF: no gigabitCF46 6TH: no gigabitCF46 6TJ: no gigabitCF46 6TL: no gigabitCF46 6TQ: no gigabitCF46 6TS: no gigabitCF46 6UB: no gigabitCF46 6UE: no gigabitCF46 6UF: no gigabitCF46 6UH: no gigabitCF46 5LU: no gigabitCF46 6BJ: no gigabit TreharrisYstrad MynachAbercynonNelson, CaerphillyPen-pedair-heolAberfan 36 postcodes without gigabit, outlined: this goes to CF46 5NL, the one nearest the middle of them36 postcodes without gigabit35 postcodes without gigabit, outlined: this goes to CF46 5AR, the one nearest the middle of them35 postcodes without gigabit17 postcodes without gigabit, outlined: this goes to CF46 5LB, the one nearest the middle of them17 postcodes without gigabit11 postcodes without gigabit, outlined: this goes to CF46 6LG, the one nearest the middle of them11 postcodes without gigabit8 postcodes without gigabit, outlined: this goes to CF46 6EW, the one nearest the middle of them8 postcodes without gigabit7 postcodes without gigabit, outlined: this goes to CF46 6TW, the one nearest the middle of them7 postcodes without gigabit Map of every postcode in CF46, by gigabit broadband Of the 349 postcodes in CF46 that ONS places, 162 have no home or business that can get gigabit, 64 have some that can, 121 can all get it and 2 have no Ofcom figure. 6 groups of postcodes without gigabit are outlined: 36 postcodes without gigabit; 35 postcodes without gigabit; 17 postcodes without gigabit; 11 postcodes without gigabit; 8 postcodes without gigabit; 7 postcodes without gigabit. Places named: Treharris, Trelewis. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 1 km. TreharrisTrelewis 17 postcodes without gigabit, outlined: this goes to CF46 5LB, the one nearest the middle of them17 postcodes without gigabit11 postcodes without gigabit, outlined: this goes to CF46 6LG, the one nearest the middle of them11 postcodes without gigabit
  • No home or business can get gigabit: 162
  • Some can get gigabit: 64
  • Every home and business can get gigabit: 121
  • Ofcom gives no figure: 2
  • Outline: where 5 or more postcodes without gigabit lie together

Of the 349 postcodes in CF46 that ONS places, 162 have no home or business that can get gigabit, 64 have some that can, 121 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 160 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.

The middle of its postcodes: latitude 51.6647, longitude -3.3006. 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; 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

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

CF46 5ADCF46 5AECF46 5AFCF46 5AGCF46 5AHCF46 5AJCF46 5ALCF46 5ANCF46 5APCF46 5ARCF46 5ASCF46 5AT

Where the postcodes without gigabit lie together

  • 36 postcodes without gigabit, outlined on the map. CF46 5NL, is the one nearest the middle of them.
  • 35 postcodes without gigabit, outlined on the map. CF46 5AR, is the one nearest the middle of them.
  • 17 postcodes without gigabit, outlined on the map. CF46 5LB, is the one nearest the middle of them.
  • 11 postcodes without gigabit, outlined on the map. CF46 6LG, is the one nearest the middle of them.
  • 8 postcodes without gigabit, outlined on the map. CF46 6EW, is the one nearest the middle of them.
  • 7 postcodes without gigabit, outlined on the map. CF46 6TW, is the one nearest the middle of them.

What broadband can you get in CF46?

Ofcom reports on 347 of the 349 postcodes in CF46. At 121 of them every home and business can get gigabit broadband.

Postcodes where every home can get gigabit121 of 347
Postcodes where every home can get superfast317 of 347

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 CF46?

Homes in CF46 sold for a typical £165,000 in the 12 months to August 2026, across 142 sales, up 5.1% on the 12 months before, HM Land Registry's figures show.

£165,000 typical price, the 12 months to August 2026
£157,000 12 months to August 2025
▲ up 5.1% on the 12 months before
  • Detached £347,500 18 sales
  • Semi-detached £210,000 49 sales
  • Terraced £135,000 75 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

Postcodes in CF46

Pick a sector, then a postcode. A sector is the district plus the next digit.

CF46 5151 postcodesCF46 6198 postcodes
UK postcode format explained

Places in CF46

Towns and villages with postcodes in CF46, and how many each has here.

Treharris postcodes,125Nelson, Caerphilly postcodes,83Trelewis postcodes,53

Who covers CF46

How many of the district's postcodes in use fall under each council, constituency and police force area.

Councils

What council am I in?

Constituencies

  • Merthyr Tydfil and Aberdare253
  • Caerphilly96

Police force areas

  • South Wales253
  • Gwent96

Next to CF46

CF45 postcode district CF47 postcode district All CF districts Treharris postcodes

"Next to" is by number: the districts before and after CF46 in the CF area.

Check a postcode

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