| Postcode | CF48 1JS | 
|---|---|
| Post Town | Merthyr Tydfil | 
| Nearest station | Merthyr Tydfil (3 km) | 
| Bus stops | Monmouth Drive (SE) Twyncarmel Entrance (NW) Twyncarmel Entrance (SE) Castle View Stores (NW) Castle View Stores (SE) Twyncarmel Centre (NW) | 
| Roads in this postcode | |
| Number of UPRNs | 19 View | 
| Known addresses | 1 Caernarvon Grove, Merthyr Tydfil 2 Caernarvon Grove, Merthyr Tydfil 3 Caernarvon Grove, Merthyr Tydfil 4 Caernarvon Grove, Merthyr Tydfil 6 Caernarvon Grove, Merthyr Tydfil 8 Caernarvon Grove, Merthyr Tydfil 9 Caernarvon Grove, Merthyr Tydfil 14 Caernarvon Grove, Merthyr Tydfil 15 Caernarvon Grove, Merthyr Tydfil 16 Caernarvon Grove, Merthyr Tydfil | 
| Main property type | Semi-detached | 
| Businesses | 
                        No businesses found
                     | 
| Latitude | 51.753491 | |
|---|---|---|
| Longitude | -3.420241 | |
| Easting | 302061 | |
| Northing | 207043 | |
| Grid reference | SO020070 | |
| UTM reference | 30U 470992 5733704 | |
| what3words | stiff.vitamins.smothered | |
| FixPhrase | crinkly lunchtime specimen unmovable | |
| Plus code | 9C3RQH3H+9W | |
| Altitude | 313 metres (1026 feet) | |
| Sunrise (today) | 7:07 | |
| Sunset (today) | 16:49 | |
| Distance away | ||
| Distance to sea | 31.6 KMs (19.6 miles) | 
| Parish | Cyfarthfa | W04000714 | 
|---|---|---|
| Ward | Cyfarthfa | W05001617 | 
| Unitary Authority | Merthyr Tydfil | W06000024 | 
| County | Mid Glamorgan | W11000005 | 
| Constituency (2024) | Merthyr Tydfil and Aberdare | W07000099 | 
| MP | Gerald 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) | 33 | |
|---|---|---|
| Households (2011) | 17 | |
| 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) | Merthyr Tydfil | W45001012 | 
| Census output area (2021) | W00006785 | |
| Census output area (2011) | 6B2 | |
| Lower layer super output area (2021) | Merthyr Tydfil 003A | W01001291 | 
| Lower layer super output area (2011) | Merthyr Tydfil 003A | W01001291 | 
| Middle layer super output area (2021) | Cefncoedycymer, Heolgerrig & Park | W02000285 | 
| Middle layer super output area (2011) | Cefncoedycymer, Heolgerrig & Park | W02000285 | 
| Travel to work area | Merthyr Tydfil | W22000029 | 
| Average property price in Cardiff | £221,509 | 
|---|---|
| Annual change | 2.2% | 
| Address | Type | Date | Price | 
|---|---|---|---|
| 9 Caernarvon Grove, Merthyr Tydfil | Detached (freehold) | Nov 2023 | £202,500 | 
| 2 Caernarvon Grove, Merthyr Tydfil | Semi-detached (freehold) | Oct 2021 | £127,000 | 
| Semi-detached (freehold) | Sep 2007 | £99,950 | |
| Semi-detached (freehold) | Jun 2004 | £75,950 | |
| 16 Caernarvon Grove, Merthyr Tydfil | Semi-detached (freehold) | Aug 2021 | £122,500 | 
| Semi-detached (freehold) | Jun 2012 | £88,500 | |
| Semi-detached (freehold) | Aug 1999 | £29,500 | |
| 1 Caernarvon Grove, Merthyr Tydfil | Semi-detached (freehold) | Nov 2020 | £85,000 | 
| Semi-detached (freehold) | Jun 2005 | £81,000 | |
| Semi-detached (freehold) | Jun 2004 | £79,000 | |
| 3 Caernarvon Grove, Merthyr Tydfil | Semi-detached (freehold) | Mar 2019 | £126,950 | 
| Semi-detached (freehold) | Oct 2013 | £79,000 | |
| 14 Caernarvon Grove, Merthyr Tydfil | Semi-detached (freehold) | Dec 2018 | £90,000 | 
| Semi-detached (freehold) | May 2002 | £38,000 | |
| 4 Caernarvon Grove, Merthyr Tydfil | Semi-detached (freehold) | Oct 2018 | £100,000 | 
| Semi-detached (freehold) | Mar 2016 | £77,000 | |
| Semi-detached (freehold) | Nov 2004 | £85,950 | |
| Semi-detached (freehold) | Jul 1997 | £35,000 | |
| 8 Caernarvon Grove, Merthyr Tydfil | Semi-detached (freehold) | Dec 2013 | £84,000 | 
| 15 Caernarvon Grove, Merthyr Tydfil | Semi-detached (freehold) | Nov 2012 | £85,000 | 
| Semi-detached (freehold) | Oct 2011 | £85,000 | |
| Semi-detached (freehold) | May 2011 | £88,500 | |
| Semi-detached (freehold) | Feb 2009 | £78,000 | |
| 6 Caernarvon Grove, Merthyr Tydfil | Semi-detached (freehold) | Nov 2003 | £70,000 |