| Postcode | CF45 3ND | 
|---|---|
| Post Town | Mountain Ash | 
| Nearest station | Mountain Ash (1 km) | 
| Bus stops | Olde Royal Oak (SE) Olde Royal Oak (NW) Mission Hall (SE) Mission Hall (NW) Darrenlas Primary School (S) Darrenlas Primary School (N) | 
| Roads in this postcode | |
| Number of UPRNs | 63 View | 
| Known addresses | 6 Cilhaul Terrace, Mountain Ash 7 Cilhaul Terrace, Mountain Ash 8 Cilhaul Terrace, Mountain Ash 9 Cilhaul Terrace, Mountain Ash 10 Cilhaul Terrace, Mountain Ash 13 Cilhaul Terrace, Mountain Ash 14 Cilhaul Terrace, Mountain Ash 16 Cilhaul Terrace, Mountain Ash 18 Cilhaul Terrace, Mountain Ash 20 Cilhaul Terrace, Mountain Ash 21 Cilhaul Terrace, Mountain Ash 22 Cilhaul Terrace, Mountain Ash 24 Cilhaul Terrace, Mountain Ash 25 Cilhaul Terrace, Mountain Ash 26 Cilhaul Terrace, Mountain Ash 29 Cilhaul Terrace, Mountain Ash 30 Cilhaul Terrace, Mountain Ash 35 Cilhaul Terrace, Mountain Ash 39 Cilhaul Terrace, Mountain Ash 40 Cilhaul Terrace, Mountain Ash 41 Cilhaul Terrace, Mountain Ash 42 Cilhaul Terrace, Mountain Ash 43 Cilhaul Terrace, Mountain Ash 44 Cilhaul Terrace, Mountain Ash 45 Cilhaul Terrace, Mountain Ash 47 Cilhaul Terrace, Mountain Ash 49 Cilhaul Terrace, Mountain Ash 50 Cilhaul Terrace, Mountain Ash 53 Cilhaul Terrace, Mountain Ash 54 Cilhaul Terrace, Mountain Ash 58 Cilhaul Terrace, Mountain Ash | 
| Main property type | Terraced | 
| Businesses | 
| Latitude | 51.674905 | |
|---|---|---|
| Longitude | -3.378632 | |
| Easting | 304768 | |
| Northing | 198249 | |
| Grid reference | ST047982 | |
| UTM reference | 30U 473818 5724949 | |
| what3words | haggle.overhear.library | |
| FixPhrase | crinkle lung stiffly violate | |
| Plus code | 9C3RMJFC+XG | |
| Altitude | 187 metres (615 feet) | |
| Sunrise (today) | 7:06 | |
| Sunset (today) | 16:49 | |
| Distance away | ||
| Distance to sea | 27.2 KMs (16.9 miles) | 
| Parish | Penrhiwceiber | W04000694 | 
|---|---|---|
| Ward | Penrhiw-ceibr | W05001093 | 
| Unitary Authority | Rhondda Cynon Taf | W06000016 | 
| County | Mid Glamorgan | W11000005 | 
| Constituency (2024) | Pontypridd | W07000106 | 
| MP | Alex Davies-Jones | Labour | 
| Police force | South Wales | |
| Water company | Dwr Cymru Welsh Water | |
| NUTS/ITL 3 | Central Valleys and Bridgend | |
| NUTS/ITL 2 | South East Wales | |
| NUTS/ITL 1 | Wales | |
| Country | Wales | W92000004 | 
| Date introduced | January 1980 | 
|---|---|
| Last updated | September 2025 | 
| User type | Small (addresses receive less than 25 items of mail per day) | 
| Quality | Within the building of the matched address closest to the postcode mean | 
| Population (2011) | 145 | |
|---|---|---|
| Households (2011) | 55 | |
| Index of Multiple Deprivation (2019) | Most deprivedLeast deprived | |
| Average household income (2020) | Lowest (£22,200)
                        Highest (£108,100)
                       | |
| Rural/urban (2021) | Urban: Further from a major town or city | |
| Rural/urban (2011) | Urban city and town | |
| Built up area (2024) | Mountain Ash | W45001094 | 
| Census output area (2021) | W00006365 | |
| Census output area (2011) | 8A1 | |
| Lower layer super output area (2021) | Rhondda Cynon Taf 008C | W01001211 | 
| Lower layer super output area (2011) | Rhondda Cynon Taf 008C | W01001211 | 
| Middle layer super output area (2021) | Penrhiw-ceibr | W02000259 | 
| Middle layer super output area (2011) | Penrhiw-ceibr | W02000259 | 
| Travel to work area | Merthyr Tydfil | W22000029 | 
| Average property price in Cardiff | £221,509 | 
|---|---|
| Annual change | 2.2% | 
| Address | Type | Date | Price | 
|---|---|---|---|
| 26 Cilhaul Terrace, Mountain Ash | Terraced (freehold) | May 2025 | £165,000 | 
| Terraced (freehold) | Dec 2023 | £80,000 | |
| 43 Cilhaul Terrace, Mountain Ash | Terraced (freehold) | Jan 2025 | £76,000 | 
| Terraced (freehold) | Feb 2007 | £70,000 | |
| Terraced (freehold) | Jul 2001 | £33,950 | |
| 30 Cilhaul Terrace, Mountain Ash | Terraced (freehold) | Dec 2024 | £130,000 | 
| Terraced (freehold) | Jan 2020 | £39,000 | |
| 41 Cilhaul Terrace, Mountain Ash | Terraced (freehold) | Aug 2024 | £137,250 | 
| Terraced (freehold) | Mar 2023 | £81,500 | |
| 50 Cilhaul Terrace, Mountain Ash | Terraced (freehold) | Aug 2024 | £111,500 | 
| Terraced (freehold) | Aug 2005 | £50,000 | |
| Terraced (freehold) | Jan 2003 | £19,000 | |
| 7 Cilhaul Terrace, Mountain Ash | Terraced (freehold) | Aug 2024 | £93,500 | 
| 54 Cilhaul Terrace, Mountain Ash | Terraced (freehold) | Dec 2023 | £77,000 | 
| Terraced (freehold) | Sep 2023 | £62,000 | |
| 8 Cilhaul Terrace, Mountain Ash | Terraced (freehold) | Apr 2023 | £150,000 | 
| Terraced (freehold) | Oct 2021 | £71,000 | |
| Terraced (freehold) | Apr 2021 | £63,000 | |
| 35 Cilhaul Terrace, Mountain Ash | Terraced (freehold) | Mar 2023 | £150,000 | 
| Terraced (freehold) | Apr 2014 | £56,000 | |
| 58 Cilhaul Terrace, Mountain Ash | Terraced (freehold) | Feb 2023 | £80,000 |