SA
53 districts, 23,286 postcodes
Carmarthenshire, Swansea, Pembrokeshire, Neath Port Talbot, Ceredigion, Powys, and others
| District | Postcodes | Local authority |
|---|---|---|
| SA1 | 1,299 | Swansea |
| SA10 | 777 | Neath Port Talbot |
| SA11 | 989 | Neath Port Talbot |
| SA12 | 788 | Neath Port Talbot |
| SA13 | 563 | Neath Port Talbot |
| SA14 | 884 | Carmarthenshire |
| SA15 | 1,015 | Carmarthenshire |
| SA16 | 261 | Carmarthenshire |
| SA17 | 428 | Carmarthenshire |
| SA18 | 772 | Carmarthenshire |
| SA19 | 827 | Carmarthenshire |
| SA2 | 773 | Swansea |
| SA20 | 237 | Carmarthenshire |
| SA3 | 728 | Swansea |
| SA31 | 577 | Carmarthenshire |
| SA32 | 399 | Carmarthenshire |
| SA33 | 642 | Carmarthenshire |
| SA34 | 232 | Carmarthenshire |
| SA35 | 42 | Pembrokeshire |
| SA36 | 11 | Pembrokeshire |
| SA37 | 59 | Pembrokeshire |
| SA38 | 189 | Carmarthenshire |
| SA39 | 117 | Carmarthenshire |
| SA4 | 1,147 | Swansea |
| SA40 | 107 | Carmarthenshire |
| SA41 | 112 | Pembrokeshire |
| SA42 | 155 | Pembrokeshire |
| SA43 | 562 | Ceredigion |
| SA44 | 667 | Ceredigion |
| SA45 | 94 | Ceredigion |
| SA46 | 130 | Ceredigion |
| SA47 | 73 | Ceredigion |
| SA48 | 378 | Ceredigion |
| SA5 | 746 | Swansea |
| SA6 | 764 | Swansea |
| SA61 | 460 | Pembrokeshire |
| SA62 | 1,007 | Pembrokeshire |
| SA63 | 88 | Pembrokeshire |
| SA64 | 105 | Pembrokeshire |
| SA65 | 200 | Pembrokeshire |
| SA66 | 164 | Pembrokeshire |
| SA67 | 362 | Pembrokeshire |
| SA68 | 153 | Pembrokeshire |
| SA69 | 157 | Pembrokeshire |
| SA7 | 349 | Swansea |
| SA70 | 425 | Pembrokeshire |
| SA71 | 407 | Pembrokeshire |
| SA72 | 306 | Pembrokeshire |
| SA73 | 629 | Pembrokeshire |
| SA8 | 305 | Neath Port Talbot |
| SA80 | 6 | Swansea |
| SA9 | 554 | Powys |
| SA99 | 65 | Swansea |