CF45 postcode district: Mountain Ash and around, Rhondda Cynon Taf

CF45 is a postcode district in Wales, with 437 postcodes in use in 2 sectors. It has postcodes in Mountain Ash and Abercynon. Its council is Rhondda Cynon Taf.

Postcodes in use: 437
Sectors: 2
Council: Rhondda Cynon Taf
Places: 2 places

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

Every postcode in CF45, by gigabit broadband

No home or business can get gigabit: 132
Some can get gigabit: 53
Every home and business can get gigabit: 249
Ofcom gives no figure: 3
Outline: where 5 or more postcodes without gigabit lie together

Of the 437 postcodes in CF45 that ONS places, 132 have no home or business that can get gigabit, 53 have some that can, 249 can all get it and 3 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.

The middle of its postcodes: latitude 51.6695, longitude -3.3621. 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

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

CF45 3NZ CF45 3PG CF45 3TS CF45 3US CF45 3UX CF45 3YJ CF45 4AA CF45 4AJ CF45 4AX CF45 4AZ CF45 4BJ CF45 4BT

Where the postcodes without gigabit lie together

80 postcodes without gigabit, outlined on the map. CF45 4TB, is the one nearest the middle of them.
18 postcodes without gigabit, outlined on the map. CF45 4AJ, is the one nearest the middle of them.
5 postcodes without gigabit, outlined on the map. CF45 4DL, is the one nearest the middle of them.

What broadband can you get in CF45?

Ofcom reports on 434 of the 437 postcodes in CF45. At 249 of them every home and business can get gigabit broadband, and at 2 some cannot get decent broadband (10 Mbit/s).

Postcodes where every home can get gigabit249 of 434

Postcodes where every home can get superfast407 of 434

Postcodes where some cannot get decent broadband2 of 434

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 CF45?

Homes in CF45 sold for a typical £130,000 in the 12 months to August 2026, across 171 sales, up 7.7% on the 12 months before, HM Land Registry's figures show.

£130,000 typical price, the 12 months to August 2026

£120,750 12 months to August 2025

▲ up 7.7% on the 12 months before

Detached £329,750 14 sales
Semi-detached £157,498 32 sales
Terraced £125,000 121 sales
Flat or maisonette 4 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. 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