| Postcode | CF15 8GS | 
|---|---|
| Post Town | Cardiff | 
| Nearest station | Radyr (1 km) | 
| Bus stops | Heol Isaf (SW) Maes y Llech (SE) Shepley Court (NW) Maes y Llech (NW) Shepley Court (SE) Comprehensive School (S) | 
| Roads in this postcode | |
| Number of UPRNs | 51 View | 
| Known addresses | 1 St John Avenue, Radyr 2 St John Avenue, Radyr 3 St John Avenue, Radyr 4 St John Avenue, Radyr 5 St John Avenue, Radyr 6 St John Avenue, Radyr 7 St John Avenue, Radyr 8 St John Avenue, Radyr 9 St John Avenue, Radyr 10 St John Avenue, Radyr 11 St John Avenue, Radyr 14 St John Avenue, Radyr 15 St John Avenue, Radyr 16 St John Avenue, Radyr 17 St John Avenue, Radyr 18 St John Avenue, Radyr 19 St John Avenue, Radyr 20 St John Avenue, Radyr 21 St John Avenue, Radyr 22 St John Avenue, Radyr 23 St John Avenue, Radyr 24 St John Avenue, Radyr 25 St John Avenue, Radyr 26 St John Avenue, Radyr 27 St John Avenue, Radyr 28 St John Avenue, Radyr 29 St John Avenue, Radyr 30 St John Avenue, Radyr 31 St John Avenue, Radyr 32 St John Avenue, Radyr 33 St John Avenue, Radyr 34 St John Avenue, Radyr 35 St John Avenue, Radyr 36 St John Avenue, Radyr 38 St John Avenue, Radyr 40 St John Avenue, Radyr 41 St John Avenue, Radyr 42 St John Avenue, Radyr 43 St John Avenue, Radyr 44 St John Avenue, Radyr 47 St John Avenue, Radyr 49 St John Avenue, Radyr 51 St John Avenue, Radyr 53 St John Avenue, Radyr 55 St John Avenue, Radyr | 
| Main property type | Detached | 
| Businesses | 
| Latitude | 51.508576 | |
|---|---|---|
| Longitude | -3.252142 | |
| Easting | 313197 | |
| Northing | 179593 | |
| Grid reference | ST131795 | |
| UTM reference | 30U 482501 5706413 | |
| what3words | harder.trips.slowly | |
| FixPhrase | cringing lurch scorpion unsliced | |
| Plus code | 9C3RGP5X+C4 | |
| Altitude | 72 metres (236 feet) | |
| Sunrise (today) | 7:05 | |
| Sunset (today) | 16:49 | |
| Distance away | ||
| Distance to sea | 7.2 KMs (4.5 miles) | 
| Parish | Radyr and Morganstown | W04000857 | 
|---|---|---|
| Ward | Radyr | W05001291 | 
| Unitary Authority | Cardiff | W06000015 | 
| County | South Glamorgan | W11000007 | 
| Constituency (2024) | Cardiff West | W07000092 | 
| MP | Mr Alex Barros-Curtis | Labour | 
| Police force | South Wales | |
| NUTS/ITL 3 | Cardiff and Vale of Glamorgan | |
| NUTS/ITL 2 | South East Wales | |
| NUTS/ITL 1 | Wales | |
| Country | Wales | W92000004 | 
| Date introduced | June 2019 | 
|---|---|
| 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 | 
| Index of Multiple Deprivation (2019) | Most deprivedLeast deprived | |
|---|---|---|
| Average household income (2020) | Lowest (£22,200)
                        Highest (£108,100)
                       | |
| Rural/urban (2021) | Urban: Nearer to a major town or city | |
| Rural/urban (2011) | Urban city and town | |
| Built up area (2024) | Cardiff | W45001208 | 
| Census output area (2021) | W00010562 | |
| Census output area (2011) | 6A1 | |
| Lower layer super output area (2021) | Cardiff 006E | W01001948 | 
| Lower layer super output area (2011) | Cardiff 006E | W01001948 | 
| Middle layer super output area (2021) | Radyr, Morganstown & Gwaelod-y-garth | W02000372 | 
| Middle layer super output area (2011) | Radyr, Morganstown & Gwaelod-y-garth | W02000372 | 
| Travel to work area | Cardiff | W22000024 | 
| Average property price in Cardiff | £221,509 | 
|---|---|
| Annual change | 2.2% | 
| Address | Type | Date | Price | 
|---|---|---|---|
| 3 St John Avenue, Radyr | New build semi-detached (freehold) | Jan 2025 | £319,995 | 
| 5 St John Avenue, Radyr | New build terraced (freehold) | Dec 2024 | £319,995 | 
| 19 St John Avenue, Radyr | New build semi-detached (freehold) | Sep 2024 | £279,995 | 
| 21 St John Avenue, Radyr | New build detached (freehold) | Aug 2024 | £279,995 | 
| 16 St John Avenue, Radyr | New build detached (freehold) | Aug 2024 | £509,995 | 
| 25 St John Avenue, Radyr | New build semi-detached (freehold) | Aug 2024 | £279,995 | 
| 1 St John Avenue, Radyr | New build semi-detached (freehold) | Aug 2024 | £324,995 | 
| 23 St John Avenue, Radyr | New build semi-detached (freehold) | Aug 2024 | £279,995 | 
| 4 St John Avenue, Radyr | New build semi-detached (freehold) | Aug 2024 | £324,995 | 
| 8 St John Avenue, Radyr | New build semi-detached (freehold) | Aug 2024 | £279,995 |