| Aber Valley | Electoral division | W05001648 |
| Aber-craf and Ystradgynlais | Electoral division | W05001117 |
| Aberaeron and Aberarth | Electoral division | W05001298 |
| Aberaman | Electoral division | W05001071 |
| Aberavon | Electoral division | W05001679 |
| Aberbargoed and Bargoed | Electoral division | W05001649 |
| Abercarn | Electoral division | W05001650 |
| Abercynon | Electoral division | W05001072 |
| Aberdare East | Electoral division | W05001073 |
| Aberdare West and Llwydcoed | Electoral division | W05001074 |
| Aberdulais | Electoral division | W05001680 |
| Aberdyfi | Electoral division | W05001506 |
| Abererch | Electoral division | W05001507 |
| Abergwili | Electoral division | W05001177 |
| Aberkenfig | Electoral division | W05001228 |
| Abermaw | Electoral division | W05001508 |
| Aberporth and Y Ferwig | Electoral division | W05001299 |
| Abersoch gyda Llanengan | Electoral division | W05001509 |
| Abersychan | Electoral division | W05001361 |
| Abertillery and Six Bells | Electoral division | W05001256 |
| Aberystwyth Morfa a Glais | Electoral division | W05001300 |
| Aberystwyth Penparcau | Electoral division | W05001301 |
| Aberystwyth Rheidol | Electoral division | W05001302 |
| Acrefair North | Electoral division | W05001713 |
| Acton and Maesydre | Electoral division | W05001714 |
| Adamsdown | Electoral division | W05001270 |
| Aethwy | Electoral division | W05001492 |
| Allt-wen | Electoral division | W05001681 |
| Allt-yr-yn | Electoral division | W05001627 |
| Alway | Electoral division | W05001628 |
| Alyn Valley | Electoral division | W05001332 |
| Ammanford | Electoral division | W05001178 |
| Amroth and Saundersfoot North | Electoral division | W05001433 |
| Argoed | Electoral division | W05001651 |
| Argoed and New Brighton | Electoral division | W05001571 |
| Arllechwedd | Electoral division | W05001510 |
| Arthog a Llangelynnin | Electoral division | W05001511 |
| Bagillt | Electoral division | W05001572 |
| Baglan | Electoral division | W05001682 |
| Bangor Is-y-Coed | Electoral division | W05001715 |
| Banwy, Llanfihangel and Llanwddyn | Electoral division | W05001118 |
| Baruc | Electoral division | W05001379 |
| Beaufort | Electoral division | W05001257 |
| Beddau and Tyn-y-nant | Electoral division | W05001075 |
| Bedlinog and Trelewis | Electoral division | W05001616 |
| Bedwas and Trethomas | Electoral division | W05001652 |
| Beechwood | Electoral division | W05001629 |
| Berriew and Castle Caereinion | Electoral division | W05001119 |
| Bethel a'r Felinheli | Electoral division | W05001512 |
| Bettws | Electoral division | W05001630 |
| Betws | Electoral division | W05001179 |
| Betws-y-Coed and Trefriw | Electoral division | W05001404 |
| Betws-yn-Rhos | Electoral division | W05001403 |
| Beulah and Llangoedmor | Electoral division | W05001303 |
| Bigyn | Electoral division | W05001180 |
| Bishopston | Electoral division | W05001039 |
| Bishton and Langstone | Electoral division | W05001631 |
| Blackmill | Electoral division | W05001229 |
| Blackwood | Electoral division | W05001653 |
| Blaenavon | Electoral division | W05001362 |
| Blaengwrach and Glynneath West | Electoral division | W05001683 |
| Blaina | Electoral division | W05001258 |
| Bodelwyddan | Electoral division | W05001333 |
| Bodowyr | Electoral division | W05001493 |
| Boncath and Clydau | Electoral division | W05001434 |
| Borras Park | Electoral division | W05001716 |
| Borth | Electoral division | W05001304 |
| Bowydd a'r Rhiw | Electoral division | W05001513 |
| Brackla East and Coychurch Lower | Electoral division | W05001230 |
| Brackla East Central | Electoral division | W05001231 |
| Brackla West | Electoral division | W05001232 |
| Brackla West Central | Electoral division | W05001233 |
| Brecon East | Electoral division | W05001120 |
| Brecon West | Electoral division | W05001121 |
| Bridgend Central | Electoral division | W05001234 |
| Brithdir and Llanfachreth/Ganllwyd/Llanelltyd | Electoral division | W05001514 |
| Briton Ferry East | Electoral division | W05001684 |
| Briton Ferry West | Electoral division | W05001685 |
| Bro Aberffraw | Electoral division | W05001494 |
| Bro Dysynni | Electoral division | W05001515 |
| Bro Gwaun | Electoral division | W05001436 |
| Bro'r Llynnoedd | Electoral division | W05001495 |
| Bronington and Hanmer | Electoral division | W05001717 |
| Bronllys and Felin-fach | Electoral division | W05001122 |
| Broughton North East | Electoral division | W05001573 |
| Broughton South | Electoral division | W05001574 |
| Brymbo | Electoral division | W05001718 |
| Bryn | Electoral division | W05001405 |
| Bryn and Cwmavon | Electoral division | W05001686 |
| Bryn Cefn | Electoral division | W05001719 |
| Bryn-coch North | Electoral division | W05001687 |
| Bryn-coch South | Electoral division | W05001688 |
| Brynford and Halkyn | Electoral division | W05001575 |
| Brynmawr | Electoral division | W05001259 |
| Brynna and Llanharan | Electoral division | W05001076 |
| Bryntirion, Laleston and Merthyr Mawr | Electoral division | W05001235 |
| Brynyffynnon | Electoral division | W05001720 |
| Buckley: Bistre East | Electoral division | W05001576 |
| Buckley: Bistre West | Electoral division | W05001577 |
| Buckley: Mountain | Electoral division | W05001578 |
| Buckley: Pentrobin | Electoral division | W05001579 |
| Builth | Electoral division | W05001123 |
| Bulwark and Thornwell | Electoral division | W05001762 |
| Burry Port | Electoral division | W05001181 |
| Burton | Electoral division | W05001435 |
| Butetown | Electoral division | W05001271 |
| Buttrills | Electoral division | W05001380 |
| Bynea | Electoral division | W05001182 |
| Bôn-y-maen | Electoral division | W05001040 |
| Cadnant | Electoral division | W05001516 |
| Cadoc | Electoral division | W05001381 |
| Cadoxton | Electoral division | W05001689 |
| Caerau | Electoral division | W05001236 |
| Caerau | Electoral division | W05001272 |
| Caergwrle | Electoral division | W05001580 |
| Caerhun | Electoral division | W05001406 |
| Caerleon | Electoral division | W05001632 |
| Caersws | Electoral division | W05001124 |
| Caerwent | Electoral division | W05001763 |
| Caerwys | Electoral division | W05001581 |
| Caldicot Castle | Electoral division | W05001764 |
| Caldicot Cross | Electoral division | W05001765 |
| Camrose | Electoral division | W05001437 |
| Canol Bangor | Electoral division | W05001517 |
| Canol Bethesda | Electoral division | W05001518 |
| Canol Tref Caernarfon | Electoral division | W05001519 |
| Canolbarth Môn | Electoral division | W05001496 |
| Canton | Electoral division | W05001273 |
| Cantref | Electoral division | W05001766 |
| Carew and Jeffreyston | Electoral division | W05001438 |
| Carmarthen Town North and South | Electoral division | W05001183 |
| Carmarthen Town West | Electoral division | W05001184 |
| Cartrefle | Electoral division | W05001721 |
| Castle | Electoral division | W05001041 |
| Castleland | Electoral division | W05001382 |
| Cathays | Electoral division | W05001274 |
| Cefn East | Electoral division | W05001722 |
| Cefn Fforest and Pengam | Electoral division | W05001654 |
| Cefn West | Electoral division | W05001723 |
| Cefn-glas | Electoral division | W05001237 |
| Cefni | Electoral division | W05001497 |
| Cenarth and Llangeler | Electoral division | W05001185 |
| Ceulan a Maesmawr | Electoral division | W05001305 |
| Chepstow Castle and Larkfield | Electoral division | W05001767 |
| Chirk North | Electoral division | W05001724 |
| Chirk South | Electoral division | W05001725 |
| Church Village | Electoral division | W05001077 |
| Churchstoke | Electoral division | W05001125 |
| Cilcain | Electoral division | W05001582 |
| Cilfynydd | Electoral division | W05001078 |