| Postcode | SA4 1FR | 
|---|---|
| Post Town | Swansea | 
| Nearest station | Pontarddulais (5 km) | 
| Bus stops | No nearby bus stops | 
| Known addresses | Castell Isaf, Llanedy | 
| Main property type | Detached | 
| Businesses | 
                        No businesses found
                     | 
| Latitude | 51.756384 | |
|---|---|---|
| Longitude | -4.071717 | |
| Easting | 257105 | |
| Northing | 208442 | |
| Grid reference | SN571084 | |
| UTM reference | 30U 426028 5734486 | |
| what3words | passports.restored.symphonic | |
| FixPhrase | crinkly lumpish spilt unelected | |
| Plus code | 9C3QQW4H+H8 | |
| Altitude | 98 metres (320 feet) | |
| Sunrise (today) | 7:04 | |
| Sunset (today) | 16:58 | |
| Distance away | ||
| Distance to sea | 6.2 KMs (3.9 miles) | 
| Parish | Llannon | W04000537 | 
|---|---|---|
| Ward | Llannon | W05001212 | 
| Unitary Authority | Carmarthenshire | W06000010 | 
| County | Dyfed | W11000002 | 
| Constituency (2024) | Llanelli | W07000098 | 
| MP | Dame Nia Griffith | Labour | 
| Police force | Dyfed-Powys | |
| NUTS/ITL 3 | South West Wales | |
| NUTS/ITL 2 | Mid and South West Wales | |
| NUTS/ITL 1 | Wales | |
| Country | Wales | W92000004 | 
| Date introduced | January 1980 | 
|---|---|
| Date usage ended | December 2001 | 
| 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) | Smaller rural: Nearer to a major town or city | |
| Rural/urban (2011) | Rural hamlet and isolated dwellings | |
| Census output area (2021) | W00003746 | |
| Census output area (2011) | 1A2 | |
| Lower layer super output area (2021) | Carmarthenshire 015C | W01000699 | 
| Lower layer super output area (2011) | Carmarthenshire 015C | W01000699 | 
| Middle layer super output area (2021) | Llan-non, Cross Hands & Pen-y-groes | W02000156 | 
| Middle layer super output area (2011) | Llan-non, Cross Hands & Pen-y-groes | W02000156 | 
| Travel to work area | Llanelli | W22000028 | 
| Average property price in Swansea | £199,131 | 
|---|---|
| Annual change | 2.4% | 
| Address | Type | Date | Price | 
|---|---|---|---|
| Castell Isaf, Llanedy | Detached (freehold) | Feb 2002 | £250,000 | 
| Detached (freehold) | Sep 1995 | £118,000 |