| Postcode | CF38 1AS | 
|---|---|
| Post Town | Pontypridd | 
| Nearest station | Trefforest Estate (3 km) | 
| Bus stops | Tabernacle (SW) Nant Celyn (NE) Nant Celyn (SW) | 
| Roads in this postcode | |
| Number of UPRNs | 7 View | 
| Known addresses | 2 Waunhir Cottages, Efail Isaf 3 Waunhir Cottages, Efail Isaf 4 Waunhir Cottages, Efail Isaf | 
| Main property type | Detached | 
| Businesses | 
                        No businesses found
                     | 
| Latitude | 51.551383 | |
|---|---|---|
| Longitude | -3.318179 | |
| Easting | 308700 | |
| Northing | 184434 | |
| Grid reference | ST087844 | |
| UTM reference | 30U 477939 5711191 | |
| what3words | shed.stepping.dumps | |
| FixPhrase | cringing lung snowiness uncounted | |
| Plus code | 9C3RHM2J+HP | |
| Altitude | 105 metres (345 feet) | |
| Sunrise (today) | 7:06 | |
| Sunset (today) | 16:49 | |
| Distance away | ||
| Distance to sea | 13.8 KMs (8.6 miles) | 
| Parish | Llantwit Fardre | W04001015 | 
|---|---|---|
| Ward | Llantwit Fardre | W05001090 | 
| 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) | 8 | |
|---|---|---|
| Households (2011) | 3 | |
| Index of Multiple Deprivation (2019) | Most deprivedLeast deprived | |
| Average household income (2020) | Lowest (£22,200)
                        Highest (£108,100)
                       | |
| Rural/urban (2021) | Smaller rural: Nearer to a major town or city | |
| Rural/urban (2011) | Urban city and town | |
| Built up area (2024) | Efail Isaf | W45001189 | 
| Census output area (2021) | W00006307 | |
| Census output area (2011) | 6A3 | |
| Lower layer super output area (2021) | Rhondda Cynon Taf 027C | W01001197 | 
| Lower layer super output area (2011) | Rhondda Cynon Taf 027C | W01001197 | 
| Middle layer super output area (2021) | Church Village West | W02000278 | 
| Middle layer super output area (2011) | Church Village West | W02000278 | 
| Travel to work area | Cardiff | W22000024 | 
| Average property price in Cardiff | £221,509 | 
|---|---|
| Annual change | 2.2% | 
| Address | Type | Date | Price | 
|---|---|---|---|
| 4 Waunhir Cottages, Efail Isaf | Detached (freehold) | Feb 2022 | £350,000 | 
| Detached (freehold) | Aug 2014 | £245,000 | |
| Detached (freehold) | May 2002 | £80,000 | |
| 2 Waunhir Cottages, Efail Isaf | Detached (freehold) | Aug 2020 | £383,000 | 
| Detached (freehold) | Oct 2005 | £215,000 | |
| Detached (freehold) | Jan 2004 | £155,000 | |
| 3 Waunhir Cottages, Efail Isaf | Semi-detached (freehold) | Aug 2019 | £162,000 | 
| Semi-detached (freehold) | May 2016 | £142,000 | |
| Terraced (freehold) | Apr 2016 | £150,000 | |
| Detached (freehold) | Oct 2008 | £145,000 | |
| Detached (freehold) | Jun 2000 | £55,000 | |
| Detached (freehold) | Jun 1995 | £40,000 |