SA1 3DH lies on Portland Street in Swansea. SA1 3DH is located in the Castle electoral ward, within the unitary authority of Swansea and the Welsh Parliamentary constituency of Swansea West. The Local Health Board is Swansea Bay University and the police force is South Wales. This postcode has been in use since January 1980.


| Easting | 265417 |
| Northing | 193064 |
| Latitude | 51.620265 |
| Longitude | -3.945444 |
| Street | Portland Street |
| Town/City | Swansea |
| Country | Wales |
| Postcode District | SA1 |
Elevation or altitude of SA1 3DH as distance above sea level:
| Metres | Feet | |
|---|---|---|
| Elevation | 10m | 33ft |
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 | Castle |
|---|---|
| Constituency | Swansea West |
12, PORTLAND STREET, SWANSEA, SA1 3DH 2007 23 MAR £250,000 |
| Kingsway (The Kingsway) | Swansea | 49m |
| Kingsway (The Kingsway) | Swansea | 52m |
| Kingsway (The Kingsway) | Swansea | 57m |
| Kingsway (The Kingsway) | Swansea | 72m |
| Kingsway (The Kingsway) | Swansea | 84m |
| Swansea Station | 0.6km |
| Llansamlet Station | 6.2km |



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| Last Collection | |||
|---|---|---|---|
| Location | Mon-Fri | Sat | Distance |
| Union St | 18:45 | 12:45 | 66m |
| Union St Business Box | 18:45 | 69m | |
| St. Marys Sq | 17:30 | 10:30 | 158m |
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 SA1 3DH:
| ITL 1 Code | Name |
|---|---|
| TLL | Wales |
| ITL 2 Code | Name |
| TLL1 | West Wales and The Valleys |
| ITL 3 Code | Name |
| TLL18 | Swansea |
| LAU 1 Code | Name |
| W06000011 | Swansea |
The below table lists the Census Output Area (OA), Lower Layer Super Output Area (LSOA), and Middle Layer Super Output Area (MSOA) for SA1 3DH:
| Code | Name | |
|---|---|---|
| OA | W00004029 | |
| LSOA | W01000745 | Swansea 025B |
| MSOA | W02000192 | Swansea 025 |
| SA1 5HN | The Kingsway | 32m |
| SA1 3BR | Oxford Street | 34m |
| SA1 3DW | Union Street | 58m |
| SA1 5LF | The Kingsway | 81m |
| SA1 3EH | Union Street | 82m |
| SA1 5LE | The Kingsway | 86m |
| SA1 3BB | Oxford Street | 87m |
| SA1 5HG | The Kingsway | 88m |
| SA1 3BL | Oxford Street | 119m |
| SA1 5HW | The Kingsway | 120m |