SA18 3SU lies on Dyffryn Road in Ammanford. SA18 3SU is located in the Ammanford electoral ward, within the unitary authority of Carmarthenshire and the Welsh Parliamentary constituency of Carmarthen East and Dinefwr. The Local Health Board is Hywel Dda University and the police force is Dyfed-Powys. This postcode has been in use since January 1980.


| Easting | 262361 |
| Northing | 212835 |
| Latitude | 51.797176 |
| Longitude | -3.997354 |
| Street | Dyffryn Road |
| Town/City | Ammanford |
| Country | Wales |
| Postcode District | SA18 |
Elevation or altitude of SA18 3SU as distance above sea level:
| Metres | Feet | |
|---|---|---|
| Elevation | 30m | 98ft |
Elevation is measured from the approximate centre of the postcode, to the nearest point on an OS contour line from OS Terrain 50, which has contour spacing of ten vertical metres.
➜ How high above sea level am I? Find the elevation of your current position using your device's GPS.
| Ward | Ammanford |
|---|---|
| Constituency | Carmarthen East And Dinefwr |
PLOT 2, DYFFRYN ROAD, AMMANFORD, SA18 3SU 2005 15 AUG £72,000 |
| Ammanford Station (Station Road) | Tir-y-dail | 145m |
| Gwynfryn Estate (Rhodfa Frank) | Tir-y-dail | 150m |
| Ammanford Station (Station Road) | Tir-y-dail | 156m |
| Carmarthenshire College (Station Road) | Tir-y-dail | 188m |
| Carmarthenshire College (Dyffryn Road) | Tir-y-dail | 213m |
| Ammanford Station | 0.1km |
| Pantyffynnon Station | 2km |
| Llandybie Station | 2.7km |



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| Last Collection | |||
|---|---|---|---|
| Location | Mon-Fri | Sat | Distance |
| Tirydail P O | 17:00 | 12:00 | 224m |
| Heol Llwyd | 17:00 | 11:45 | 567m |
| College St | 17:30 | 11:30 | 633m |
The below table lists the International Territorial Level (ITL) codes (formerly Nomenclature of Territorial Units for Statistics (NUTS) codes) and Local Administrative Units (LAU) codes for SA18 3SU:
| ITL 1 Code | Name |
|---|---|
| TLL | Wales |
| ITL 2 Code | Name |
| TLL1 | West Wales and The Valleys |
| ITL 3 Code | Name |
| TLL14 | South West Wales |
| LAU 1 Code | Name |
| W06000010 | Carmarthenshire |
The below table lists the Census Output Area (OA), Lower Layer Super Output Area (LSOA), and Middle Layer Super Output Area (MSOA) for SA18 3SU:
| Code | Name | |
|---|---|---|
| OA | W00003845 | |
| LSOA | W01000714 | Carmarthenshire 013D |
| MSOA | W02000154 | Carmarthenshire 013 |
| SA18 2LG | Heol Hayden | 77m |
| SA18 2DL | Bryn Derwen Road | 81m |
| SA18 2DE | Bryn Derwen Road | 106m |
| SA18 2DF | Harold Street | 106m |
| SA18 2DH | Norman Road | 120m |
| SA18 2LP | Rhodfa Frank | 139m |
| SA18 2NU | Station Road | 169m |
| SA18 2DN | Florence Road | 174m |
| SA18 2DG | Harold Street | 175m |
| SA18 2DD | Station Road | 185m |