| Aber |
ABE |
| Abercynon |
ACY |
| Aberdare |
ABA |
| Aberdovey |
AVY |
| Abererch |
ABH |
| Abergavenny |
AGV |
| Abergele and Pensarn |
AGL |
| Aberystwyth |
AYW |
| Ammanford |
AMF |
| Baglan |
BAJ |
| Bangor (Gwynedd) |
BNG |
| Bargoed |
BGD |
| Barmouth |
BRM |
| Barry |
BRY |
| Barry Docks |
BYD |
| Barry Island |
BYI |
| Betws-y-Coed |
BYC |
| Birchgrove |
BCG |
| Blaenau Ffestiniog |
BFF |
| Bodorgan |
BOR |
| Borth |
BRH |
| Bow Street |
BOW |
| Bridgend |
BGN |
| Brithdir |
BHD |
| Briton Ferry |
BNF |
| Broome |
BME |
| Buckley |
BCK |
| Bucknell |
BUK |
| Builth Road |
BHR |
| Bynea |
BYE |
| Cadoxton |
CAD |
| Caergwrle |
CGW |
| Caerphilly |
CPH |
| Caersws |
CWS |
| Caldicot |
CDT |
| Cardiff Bay |
CDB |
| Cardiff Central |
CDF |
| Cardiff Queen Street |
CDQ |
| Carmarthen |
CMN |
| Cathays |
CYS |
| Cefn-Y-Bedd |
CYB |
| Chepstow |
CPW |
| Chester |
CTR |
| Chirk |
CRK |
| Church Stretton |
CTT |
| Cilmeri |
CIM |
| Clarbeston Road |
CLR |
| Clunderwen |
CUW |
| Cogan |
CGN |
| Colwyn Bay |
CWB |
| Conwy |
CNW |
| Coryton |
COY |
| Craven Arms |
CRV |
| Criccieth |
CCC |
| Crosskeys |
CKY |
| Cwmbach |
CMH |
| Cwmbran |
CWM |
| Cynghordy |
CYN |
| Danescourt |
DCT |
| Deganwy |
DGY |
| Dinas (Rhondda) |
DMG |
| Dinas Powys |
DNS |
| Dingle Road |
DGL |
| Dolau |
DOL |
| Dolgarrog |
DLG |
| Dolwyddelan |
DWD |
| Dovey Junction |
DVY |
| Dyffryn Ardudwy |
DYF |
| Eastbrook |
EBK |
| Ebbw Vale Parkway |
EBV |
| Ebbw Vale Town |
EBB |
| Energlyn and Churchill Park |
ECP |
| Fairbourne |
FRB |
| Fairwater |
FRW |
| Fernhill |
FER |
| Ferryside |
FYS |
| Ffairfach |
FFA |
| Fishguard and Goodwick |
FGW |
| Fishguard Harbour |
FGH |
| Flint |
FLN |
| Frodsham |
FRD |
| Garth (Bridgend County) |
GMG |
| Garth (Powys) |
GTH |
| Gilfach Fargoed |
GFF |
| Glan Conwy |
GCW |
| Gobowen |
GOB |
| Gowerton |
GWN |
| Grangetown (Cardiff) |
GTN |
| Gwersyllt |
GWE |
| Harlech |
HRL |
| Haverfordwest |
HVF |
| Hawarden |
HWD |
| Hawarden Bridge |
HWB |
| Heath High Level |
HHL |
| Heath Low Level |
HLL |
| Helsby |
HSB |
| Hengoed |
HNG |
| Hereford |
HFD |
| Heswall |
HSW |
| Holyhead |
HHD |
| Hope (Flintshire) |
HPE |
| Hopton Heath |
HPT |
| Johnston (Pembs) |
JOH |
| Kidwelly |
KWL |
| Kilgetty |
KGT |
| Knighton |
KNI |
| Knucklas |
KNU |
| Lamphey |
LAM |
| Leominster |
LEO |
| Lisvane and Thornhill |
LVT |
| Llanaber |
LLA |
| Llanbedr |
LBR |
| Llanbister Road |
LLT |
| Llanbradach |
LNB |
| Llandaf |
LLN |
| Llandanwg |
LDN |
| Llandecwyn |
LLC |
| Llandeilo |
LLL |
| Llandovery |
LLV |
| Llandrindod |
LLO |
| Llandudno |
LLD |
| Llandudno Junction |
LLJ |
| Llandybie |
LLI |
| Llanelli |
LLE |
| Llanfairfechan |
LLF |
| Llanfairpwll |
LPG |
| Llangadog |
LLG |
| Llangammarch |
LLM |
| Llangennech |
LLH |
| Llangynllo |
LGO |
| Llanharan |
LLR |
| Llanhilleth |
LTH |
| Llanishen |
LLS |
| Llanrwst |
LWR |
| Llansamlet |
LAS |
| Llantwit Major |
LWM |
| Llanwrda |
LNR |
| Llanwrtyd |
LNW |
| Llwyngwril |
LLW |
| Llwynypia |
LLY |
| Ludlow |
LUD |
| Lydney |
LYD |
| Machynlleth |
MCN |
| Maesteg |
MST |
| Maesteg (Ewenny Road) |
MEW |
| Manorbier |
MRB |
| Merthyr Tydfil |
MER |
| Merthyr Vale |
MEV |
| Milford Haven |
MFH |
| Minffordd |
MFF |
| Morfa Mawddach |
MFA |
| Mountain Ash |
MTA |
| Nantwich |
NAN |
| Narberth |
NAR |
| Neath |
NTH |
| Neston |
NES |
| Newbridge |
NBE |
| Newport (South Wales) |
NWP |
| Newtown (Powys) |
NWT |
| Ninian Park |
NNP |
| North Llanrwst |
NLR |
| Pantyffynnon |
PTF |
| Pembrey and Burry Port |
PBY |
| Pembroke |
PMB |
| Pembroke Dock |
PMD |
| Pen-Y-Bont (Mid Wales) |
PNY |
| Penally |
PNA |
| Penarth |
PEN |
| Pencoed |
PCD |
| Pengam |
PGM |
| Penhelig |
PHG |
| Penmaenmawr |
PMW |
| Penrhiwceiber |
PER |
| Penrhyndeudraeth |
PRH |
| Pensarn (Gwynedd) |
PES |
| Pentre-Bach |
PTB |
| Penychain |
PNC |
| Penyffordd |
PNF |
| Pont-y-Pant |
PYP |
| Pontarddulais |
PTD |
| Pontlottyn |
PLT |
| Pontyclun |
PYC |
| Pontypool and New Inn |
PPL |
| Pontypridd |
PPD |
| Port Talbot Parkway |
PTA |
| Porth |
POR |
| Porthmadog |
PTM |
| Prees |
PRS |
| Prestatyn |
PRT |
| Pwllheli |
PWL |
| Pye Corner |
PYE |
| Pyle |
PYL |
| Quakers Yard |
QYD |
| Radyr |
RDR |
| Rhiwbina |
RHI |
| Rhoose Cardiff International Airport |
RIA |
| Rhosneigr |
RHO |
| Rhyl |
RHL |
| Rhymney |
RHY |
| Risca and Pontymister |
RCA |
| Rogerstone |
ROR |
| Roman Bridge |
RMB |
| Ruabon |
RUA |
| Runcorn East |
RUE |
| Sarn |
SRR |
| Saundersfoot |
SDF |
| Severn Tunnel Junction |
STJ |
| Shotton |
SHT |
| Shrewsbury |
SHR |
| Skewen |
SKE |
| Sugar Loaf |
SUG |
| Swansea |
SWA |
| Taffs Well |
TAF |
| Tal-y-Cafn |
TLC |
| Talsarnau |
TAL |
| Talybont |
TLB |
| Tenby |
TEN |
| Tir-Phil |
TIR |
| Ton Pentre |
TPN |
| Tondu |
TDU |
| Tonfanau |
TNF |
| Tonypandy |
TNP |
| Trefforest |
TRF |
| Trefforest Estate |
TRE |
| Trehafod |
TRH |
| Treherbert |
TRB |
| Treorchy |
TRY |
| Troed-Y-Rhiw |
TRD |
| Ty Croes |
TYC |
| Ty Glas |
TGS |
| Tygwyn |
TYG |
| Tywyn |
TYW |
| Upton (Merseyside) |
UPT |
| Valley |
VAL |
| Waun-gron Park |
WNG |
| Welshpool |
WLP |
| Wem |
WEM |
| Whitchurch (Cardiff) |
WHT |
| Whitchurch (Shropshire) |
WTC |
| Whitland |
WTL |
| Wildmill |
WMI |
| Wrenbury |
WRE |
| Wrexham Central |
WXC |
| Wrexham General |
WRX |
| Ynyswen |
YNW |
| Yorton |
YRT |
| Ystrad Mynach |
YSM |
| Ystrad Rhondda |
YSR |
> 10,000,000
> 1,000,000
> 100,000
> 10,000
> 1,000
< 1,000