Population Density in South WalesWards Ranked
South Wales has 2.2 million people, about 290 per km².
All 425 wards in South Wales, ranked by residents per km². Data: Office for National Statistics (2022), Open Government Licence v3.0.
Open the interactive map| Rank | Ward | Residents per km² | Residents | Area |
|---|---|---|---|---|
| 1 | PlasnewyddCardiff | 11,922 per km² | 19,201 | 1.61 km² |
| 2 | AdamsdownCardiff | 11,771 per km² | 12,723 | 1.08 km² |
| 3 | VictoriaNewport | 9,991 per km² | 9,497 | 0.95 km² |
| 4 | GabalfaCardiff | 7,222 per km² | 8,984 | 1.24 km² |
| 5 | CathaysCardiff | 7,143 per km² | 23,850 | 3.34 km² |
| 6 | UplandsSwansea | 6,380 per km² | 14,769 | 2.31 km² |
| 7 | DewstowMonmouthshire | 6,274 per km² | 2,378 | 0.38 km² |
| 8 | CastleSwansea | 6,102 per km² | 14,004 | 2.3 km² |
| 9 | CourtVale of Glamorgan | 6,028 per km² | 4,800 | 0.8 km² |
| 10 | ButtrillsVale of Glamorgan | 5,891 per km² | 6,308 | 1.07 km² |
| 11 | RiversideCardiff | 5,427 per km² | 14,038 | 2.59 km² |
| 12 | CantonCardiff | 5,320 per km² | 16,368 | 3.08 km² |
| 13 | BeechwoodNewport | 5,205 per km² | 7,766 | 1.49 km² |
| 14 | ElyCardiff | 5,196 per km² | 15,680 | 3.02 km² |
| 15 | Rhydfelen CentralRhondda Cynon Taf | 5,154 per km² | 2,718 | 0.53 km² |
| 16 | CwmbwrlaSwansea | 5,098 per km² | 7,542 | 1.48 km² |
| 17 | StanwellVale of Glamorgan | 5,056 per km² | 4,728 | 0.94 km² |
| 18 | TownhillSwansea | 4,847 per km² | 8,859 | 1.83 km² |
| 19 | AlwayNewport | 4,832 per km² | 8,445 | 1.75 km² |
| 20 | St JuliansNewport | 4,678 per km² | 9,025 | 1.93 km² |
| 21 | Brackla East CentralBridgend | 4,626 per km² | 2,358 | 0.51 km² |
| 22 | PentwynCardiff | 4,576 per km² | 16,358 | 3.57 km² |
| 23 | Llandaff NorthCardiff | 4,546 per km² | 8,495 | 1.87 km² |
| 24 | Brackla WestBridgend | 4,546 per km² | 2,777 | 0.61 km² |
| 25 | TyishaCarmarthenshire | 4,516 per km² | 5,043 | 1.12 km² |
| 26 | St Augustine'sVale of Glamorgan | 4,480 per km² | 6,901 | 1.54 km² |
| 27 | FairwaterCardiff | 4,406 per km² | 13,407 | 3.04 km² |
| 28 | Stow HillNewport | 4,277 per km² | 6,466 | 1.51 km² |
| 29 | Brackla West CentralBridgend | 4,255 per km² | 3,634 | 0.85 km² |
| 30 | ElliCarmarthenshire | 4,225 per km² | 2,029 | 0.48 km² |
| 31 | HeathCardiff | 4,062 per km² | 12,847 | 3.16 km² |
| 32 | GrangetownCardiff | 4,008 per km² | 21,240 | 5.3 km² |
| 33 | Milford: HakinPembrokeshire Coast | 3,995 per km² | 2,708 | 0.68 km² |
| 34 | Sandfields WestNeath Port Talbot | 3,947 per km² | 6,752 | 1.71 km² |
| 35 | PenylanCardiff | 3,936 per km² | 13,217 | 3.36 km² |
| 36 | CaerauCardiff | 3,913 per km² | 11,860 | 3.03 km² |
| 37 | LlanrumneyCardiff | 3,899 per km² | 11,667 | 2.99 km² |
| 38 | Sandfields EastNeath Port Talbot | 3,877 per km² | 6,597 | 1.7 km² |
| 39 | CornerswellVale of Glamorgan | 3,725 per km² | 5,257 | 1.41 km² |
| 40 | MalpasNewport | 3,706 per km² | 7,604 | 2.05 km² |
| 41 | CroesonenMonmouthshire | 3,704 per km² | 2,017 | 0.54 km² |
| 42 | Bridgend CentralBridgend | 3,695 per km² | 10,239 | 2.77 km² |
| 43 | ParkMonmouthshire | 3,621 per km² | 1,988 | 0.55 km² |
| 44 | Porthcawl West CentralBridgend | 3,515 per km² | 2,556 | 0.73 km² |
| 45 | LlandaffCardiff | 3,502 per km² | 8,956 | 2.56 km² |
| 46 | RinglandNewport | 3,454 per km² | 8,335 | 2.41 km² |
| 47 | Haverfordwest: CastlePembrokeshire Coast | 3,438 per km² | 2,326 | 0.68 km² |
| 48 | LliediCarmarthenshire | 3,423 per km² | 5,445 | 1.59 km² |
| 49 | Caldicot CrossMonmouthshire | 3,415 per km² | 1,579 | 0.46 km² |
| 50 | Coed EvaTorfaen | 3,342 per km² | 2,439 | 0.73 km² |
| 51 | Coedffranc CentralNeath Port Talbot | 3,312 per km² | 5,004 | 1.51 km² |
| 52 | Rogerstone EastNewport | 3,310 per km² | 2,974 | 0.9 km² |
| 53 | LandoreSwansea | 3,307 per km² | 7,389 | 2.23 km² |
| 54 | GibbonsdownVale of Glamorgan | 3,293 per km² | 5,512 | 1.67 km² |
| 55 | Rogerstone WestNewport | 3,268 per km² | 8,029 | 2.46 km² |
| 56 | LlanishenCardiff | 3,264 per km² | 10,599 | 3.25 km² |
| 57 | GaerNewport | 3,233 per km² | 9,040 | 2.8 km² |
| 58 | ShaftesburyNewport | 3,228 per km² | 5,294 | 1.64 km² |
| 59 | Neath SouthNeath Port Talbot | 3,219 per km² | 4,793 | 1.49 km² |
| 60 | Narberth: UrbanPembrokeshire Coast | 3,153 per km² | 2,773 | 0.88 km² |
| 61 | CadocVale of Glamorgan | 3,144 per km² | 9,961 | 3.17 km² |
| 62 | Bryn-coch SouthNeath Port Talbot | 3,138 per km² | 5,309 | 1.69 km² |
| 63 | PontnewyddTorfaen | 3,088 per km² | 7,358 | 2.38 km² |
| 64 | CyncoedCardiff | 3,072 per km² | 11,659 | 3.79 km² |
| 65 | LansdownMonmouthshire | 3,060 per km² | 2,407 | 0.79 km² |
| 66 | Milford: WestPembrokeshire Coast | 3,014 per km² | 2,179 | 0.72 km² |
| 67 | PenderrySwansea | 2,981 per km² | 11,392 | 3.82 km² |
| 68 | Pembroke Dock: CentralPembrokeshire Coast | 2,953 per km² | 2,104 | 0.71 km² |
| 69 | Milford: CentralPembrokeshire Coast | 2,943 per km² | 2,055 | 0.7 km² |
| 70 | SplottCardiff | 2,931 per km² | 14,204 | 4.85 km² |
| 71 | Morgan JonesCaerphilly | 2,858 per km² | 7,607 | 2.66 km² |
| 72 | LliswerryNewport | 2,852 per km² | 13,779 | 4.83 km² |
| 73 | BigynCarmarthenshire | 2,842 per km² | 6,594 | 2.32 km² |
| 74 | Penrhiw-ceibrRhondda Cynon Taf | 2,741 per km² | 5,838 | 2.13 km² |
| 75 | IlltydVale of Glamorgan | 2,734 per km² | 7,820 | 2.86 km² |
| 76 | HengoedCaerphilly | 2,717 per km² | 5,560 | 2.05 km² |
| 77 | LlanyrafonTorfaen | 2,681 per km² | 2,563 | 0.96 km² |
| 78 | Cefn-glasBridgend | 2,660 per km² | 4,067 | 1.53 km² |
| 79 | FairwaterTorfaen | 2,653 per km² | 5,004 | 1.89 km² |
| 80 | BarucVale of Glamorgan | 2,640 per km² | 8,882 | 3.36 km² |
| 81 | AberavonNeath Port Talbot | 2,542 per km² | 5,673 | 2.23 km² |
| 82 | West CrossSwansea | 2,521 per km² | 5,855 | 2.32 km² |
| 83 | Mynydd-bachSwansea | 2,519 per km² | 8,916 | 3.54 km² |
| 84 | Allt-yr-ynNewport | 2,505 per km² | 9,575 | 3.82 km² |
| 85 | Cefn Fforest and PengamCaerphilly | 2,449 per km² | 7,358 | 3 km² |
| 86 | Church VillageRhondda Cynon Taf | 2,405 per km² | 6,900 | 2.87 km² |
| 87 | Chepstow Castle and LarkfieldMonmouthshire | 2,395 per km² | 3,351 | 1.4 km² |
| 88 | St. DialsTorfaen | 2,379 per km² | 4,477 | 1.88 km² |
| 89 | PantegTorfaen | 2,320 per km² | 7,459 | 3.21 km² |
| 90 | RumneyCardiff | 2,317 per km² | 9,094 | 3.92 km² |
| 91 | MorristonSwansea | 2,307 per km² | 16,093 | 6.97 km² |
| 92 | Neath NorthNeath Port Talbot | 2,293 per km² | 3,789 | 1.65 km² |
| 93 | Pen Y FalMonmouthshire | 2,290 per km² | 1,815 | 0.79 km² |
| 94 | CroesyceiliogTorfaen | 2,280 per km² | 5,221 | 2.29 km² |
| 95 | SkettySwansea | 2,261 per km² | 15,268 | 6.75 km² |
| 96 | Risca EastCaerphilly | 2,260 per km² | 6,164 | 2.73 km² |
| 97 | Mount PleasantMonmouthshire | 2,227 per km² | 1,693 | 0.76 km² |
| 98 | ButetownCardiff | 2,102 per km² | 12,551 | 5.97 km² |
| 99 | St ThomasSwansea | 2,098 per km² | 6,966 | 3.32 km² |
| 100 | Haverfordwest: PortfieldPembrokeshire Coast | 2,088 per km² | 2,493 | 1.19 km² |
| 101 | Porthcawl East CentralBridgend | 2,086 per km² | 5,711 | 2.74 km² |
| 102 | PenyrheolCaerphilly | 2,083 per km² | 12,140 | 5.83 km² |
| 103 | GilfachCaerphilly | 2,051 per km² | 2,065 | 1.01 km² |
| 104 | CastlelandVale of Glamorgan | 2,034 per km² | 4,928 | 2.42 km² |
| 105 | TrowbridgeCardiff | 2,031 per km² | 17,680 | 8.71 km² |
| 106 | Neath EastNeath Port Talbot | 1,960 per km² | 6,096 | 3.11 km² |
| 107 | Ebbw Vale NorthBlaenau Gwent | 1,957 per km² | 4,809 | 2.46 km² |
| 108 | BlackwoodCaerphilly | 1,946 per km² | 8,158 | 4.19 km² |
| 109 | Pembroke Dock: BufferlandPembrokeshire Coast | 1,944 per km² | 1,681 | 0.86 km² |
| 110 | West EndMonmouthshire | 1,941 per km² | 1,911 | 0.98 km² |
| 111 | Whitchurch and TongwynlaisCardiff | 1,846 per km² | 15,938 | 8.63 km² |
| 112 | Bulwark and ThornwellMonmouthshire | 1,832 per km² | 4,960 | 2.71 km² |
| 113 | RhiwbinaCardiff | 1,827 per km² | 11,691 | 6.4 km² |
| 114 | CockettSwansea | 1,788 per km² | 10,362 | 5.8 km² |
| 115 | DyfanVale of Glamorgan | 1,758 per km² | 5,608 | 3.19 km² |
| 116 | AmmanfordCarmarthenshire | 1,758 per km² | 5,462 | 3.11 km² |
| 117 | Beddau and Tyn-y-nantRhondda Cynon Taf | 1,727 per km² | 7,480 | 4.33 km² |
| 118 | MumblesSwansea | 1,704 per km² | 7,754 | 4.55 km² |
| 119 | PlymouthVale of Glamorgan | 1,681 per km² | 5,703 | 3.39 km² |
| 120 | Neyland: EastPembrokeshire Coast | 1,664 per km² | 2,151 | 1.29 km² |
| 121 | TownMonmouthshire | 1,651 per km² | 2,071 | 1.25 km² |
| 122 | TrallwngRhondda Cynon Taf | 1,636 per km² | 3,701 | 2.26 km² |
| 123 | BettwsNewport | 1,635 per km² | 8,370 | 5.12 km² |
| 124 | PillgwenllyNewport | 1,634 per km² | 8,630 | 5.28 km² |
| 125 | Dunvant and KillaySwansea | 1,631 per km² | 9,178 | 5.63 km² |
| 126 | Aberbargoed and BargoedCaerphilly | 1,629 per km² | 9,963 | 6.12 km² |
| 127 | GrofieldMonmouthshire | 1,613 per km² | 2,209 | 1.37 km² |
| 128 | GlanymorCarmarthenshire | 1,595 per km² | 6,401 | 4.01 km² |
| 129 | Coity HigherBridgend | 1,570 per km² | 11,568 | 7.37 km² |
| 130 | RadyrCardiff | 1,563 per km² | 7,313 | 4.68 km² |
| 131 | Pembroke: St Mary NorthPembrokeshire Coast | 1,557 per km² | 2,479 | 1.59 km² |
| 132 | TreforestRhondda Cynon Taf | 1,554 per km² | 5,852 | 3.77 km² |
| 133 | VanCaerphilly | 1,527 per km² | 4,682 | 3.07 km² |
| 134 | PorthRhondda Cynon Taf | 1,526 per km² | 5,619 | 3.68 km² |
| 135 | Caldicot CastleMonmouthshire | 1,486 per km² | 1,808 | 1.22 km² |
| 136 | Pembroke Dock: MarketPembrokeshire Coast | 1,486 per km² | 1,837 | 1.24 km² |
| 137 | Pembroke Dock: PennarPembrokeshire Coast | 1,477 per km² | 1,877 | 1.27 km² |
| 138 | Port TalbotNeath Port Talbot | 1,471 per km² | 5,782 | 3.93 km² |
| 139 | Haverfordwest: GarthPembrokeshire Coast | 1,437 per km² | 2,668 | 1.86 km² |
| 140 | PontllanfraithCaerphilly | 1,431 per km² | 8,269 | 5.78 km² |
| 141 | OldcastleBridgend | 1,411 per km² | 5,211 | 3.69 km² |
| 142 | Glyn-cochRhondda Cynon Taf | 1,409 per km² | 2,896 | 2.05 km² |
| 143 | Pontprennau and Old St MellonsCardiff | 1,400 per km² | 12,073 | 8.62 km² |
| 144 | BeaufortBlaenau Gwent | 1,350 per km² | 5,866 | 4.34 km² |
| 145 | Haverfordwest: PrioryPembrokeshire Coast | 1,344 per km² | 2,669 | 1.99 km² |
| 146 | Coedffranc NorthNeath Port Talbot | 1,339 per km² | 2,257 | 1.69 km² |
| 147 | TrealawRhondda Cynon Taf | 1,320 per km² | 3,509 | 2.66 km² |
| 148 | LlwchwrSwansea | 1,263 per km² | 9,318 | 7.38 km² |
| 149 | LlandoughVale of Glamorgan | 1,263 per km² | 2,127 | 1.68 km² |
| 150 | Pontypridd TownRhondda Cynon Taf | 1,258 per km² | 2,950 | 2.34 km² |
| 151 | Tenby: NorthPembrokeshire Coast | 1,238 per km² | 2,007 | 1.62 km² |
| 152 | Haverfordwest: PrendergastPembrokeshire Coast | 1,222 per km² | 2,144 | 1.75 km² |
| 153 | St MartinsCaerphilly | 1,215 per km² | 8,470 | 6.97 km² |
| 154 | Upper CwmbranTorfaen | 1,212 per km² | 5,931 | 4.89 km² |
| 155 | Rest BayBridgend | 1,202 per km² | 2,443 | 2.03 km² |
| 156 | SevernMonmouthshire | 1,191 per km² | 2,196 | 1.84 km² |
| 157 | PenmaenCaerphilly | 1,188 per km² | 5,716 | 4.81 km² |
| 158 | GreenmeadowTorfaen | 1,182 per km² | 2,760 | 2.33 km² |
| 159 | Lisvane and ThornhillCardiff | 1,151 per km² | 10,808 | 9.39 km² |
| 160 | Llwyn-y-piaRhondda Cynon Taf | 1,136 per km² | 3,423 | 3.01 km² |
| 161 | LlwynhendyCarmarthenshire | 1,127 per km² | 4,335 | 3.85 km² |
| 162 | WaterfrontSwansea | 1,123 per km² | 3,800 | 3.38 km² |
| 163 | WaunarlwyddSwansea | 1,110 per km² | 3,310 | 2.98 km² |
| 164 | Pen-y-graigRhondda Cynon Taf | 1,086 per km² | 5,251 | 4.83 km² |
| 165 | Dafen and FelinfoelCarmarthenshire | 1,078 per km² | 5,141 | 4.77 km² |
| 166 | CymerRhondda Cynon Taf | 1,074 per km² | 5,845 | 5.44 km² |
| 167 | TonypandyRhondda Cynon Taf | 1,073 per km² | 3,568 | 3.33 km² |
| 168 | Trevethin and PenygarnTorfaen | 1,072 per km² | 5,324 | 4.97 km² |
| 169 | Briton Ferry WestNeath Port Talbot | 1,022 per km² | 2,882 | 2.82 km² |
| 170 | Upper Rhydfelen and Glyn-tafRhondda Cynon Taf | 1,021 per km² | 3,635 | 3.56 km² |
| 171 | Aberdare EastRhondda Cynon Taf | 1,015 per km² | 6,834 | 6.73 km² |
| 172 | Burry PortCarmarthenshire | 997 per km² | 4,159 | 4.17 km² |
| 173 | Pembroke Dock: BushPembrokeshire Coast | 992 per km² | 2,178 | 2.19 km² |
| 174 | Gorseinon and PenyrheolSwansea | 990 per km² | 10,701 | 10.8 km² |
| 175 | Risca WestCaerphilly | 988 per km² | 5,076 | 5.14 km² |
| 176 | Fishguard: North WestPembrokeshire Coast | 984 per km² | 1,629 | 1.66 km² |
| 177 | Pontyclun CentralRhondda Cynon Taf | 981 per km² | 2,053 | 2.09 km² |
| 178 | Bôn-y-maenSwansea | 977 per km² | 7,581 | 7.76 km² |
| 179 | CwmbachRhondda Cynon Taf | 954 per km² | 5,080 | 5.32 km² |
| 180 | GeorgetownBlaenau Gwent | 947 per km² | 3,985 | 4.21 km² |
| 181 | BrynmawrBlaenau Gwent | 944 per km² | 5,325 | 5.64 km² |
| 182 | LlansamletSwansea | 919 per km² | 14,852 | 16.2 km² |
| 183 | PentreRhondda Cynon Taf | 911 per km² | 5,236 | 5.75 km² |
| 184 | Ystrad MynachCaerphilly | 874 per km² | 5,465 | 6.26 km² |
| 185 | LlantarnamTorfaen | 853 per km² | 6,624 | 7.76 km² |
| 186 | Fishguard: North EastPembrokeshire Coast | 847 per km² | 1,866 | 2.2 km² |
| 187 | Maesteg EastBridgend | 842 per km² | 4,659 | 5.53 km² |
| 188 | St Bride's Minor and YnysawdreBridgend | 828 per km² | 10,111 | 12.2 km² |
| 189 | Pyle, Kenfig Hill and Cefn CribwrBridgend | 827 per km² | 8,799 | 10.6 km² |
| 190 | NottageBridgend | 818 per km² | 3,291 | 4.02 km² |
| 191 | Pen-y-waunRhondda Cynon Taf | 814 per km² | 3,025 | 3.72 km² |
| 192 | Maesteg WestBridgend | 810 per km² | 5,742 | 7.09 km² |
| 193 | Pontnewynydd and SnatchwoodTorfaen | 787 per km² | 3,798 | 4.83 km² |
| 194 | ByneaCarmarthenshire | 781 per km² | 4,714 | 6.03 km² |
| 195 | Magor East with UndyMonmouthshire | 779 per km² | 4,383 | 5.63 km² |
| 196 | Moriah and PontlottynCaerphilly | 777 per km² | 5,390 | 6.93 km² |
| 197 | Pembroke: Monkton and St Mary SouthPembrokeshire Coast | 772 per km² | 3,698 | 4.79 km² |
| 198 | Carmarthen Town North and SouthCarmarthenshire | 752 per km² | 9,146 | 12.2 km² |
| 199 | BaglanNeath Port Talbot | 748 per km² | 6,719 | 8.98 km² |
| 200 | Milford: NorthPembrokeshire Coast | 746 per km² | 2,487 | 3.34 km² |
| 201 | YstradRhondda Cynon Taf | 741 per km² | 5,122 | 6.91 km² |
| 202 | Tylorstown and YnyshirRhondda Cynon Taf | 731 per km² | 7,496 | 10.3 km² |
| 203 | Pen-y-faiBridgend | 726 per km² | 2,335 | 3.21 km² |
| 204 | LlanharryRhondda Cynon Taf | 724 per km² | 3,729 | 5.15 km² |
| 205 | TrebanosNeath Port Talbot | 719 per km² | 1,675 | 2.33 km² |
| 206 | Tonyrefail WestRhondda Cynon Taf | 711 per km² | 6,898 | 9.71 km² |
| 207 | OvermonnowMonmouthshire | 706 per km² | 2,186 | 3.1 km² |
| 208 | CilfynyddRhondda Cynon Taf | 704 per km² | 2,913 | 4.14 km² |
| 209 | Abertillery and Six BellsBlaenau Gwent | 700 per km² | 6,380 | 9.11 km² |
| 210 | LlanbradachCaerphilly | 699 per km² | 3,991 | 5.71 km² |
| 211 | Llantwit FardreRhondda Cynon Taf | 697 per km² | 6,239 | 8.95 km² |
| 212 | AbercynonRhondda Cynon Taf | 690 per km² | 6,295 | 9.12 km² |
| 213 | Godre'r GraigNeath Port Talbot | 681 per km² | 2,083 | 3.06 km² |
| 214 | SullyVale of Glamorgan | 668 per km² | 4,728 | 7.07 km² |
| 215 | Ebbw Vale SouthBlaenau Gwent | 660 per km² | 4,233 | 6.42 km² |
| 216 | St KingsmarkMonmouthshire | 654 per km² | 2,066 | 3.16 km² |
| 217 | Carmarthen Town WestCarmarthenshire | 645 per km² | 5,564 | 8.62 km² |
| 218 | GowertonSwansea | 644 per km² | 4,892 | 7.59 km² |
| 219 | Bedwas and TrethomasCaerphilly | 635 per km² | 6,561 | 10.3 km² |
| 220 | Allt-wenNeath Port Talbot | 619 per km² | 2,702 | 4.36 km² |
| 221 | St CattwgCaerphilly | 616 per km² | 7,419 | 12 km² |
| 222 | Ton-tegRhondda Cynon Taf | 612 per km² | 3,042 | 4.97 km² |
| 223 | NantygloBlaenau Gwent | 612 per km² | 4,561 | 7.46 km² |
| 224 | NewbridgeCaerphilly | 606 per km² | 6,259 | 10.3 km² |
| 225 | AberamanRhondda Cynon Taf | 600 per km² | 10,076 | 16.8 km² |
| 226 | NewtonBridgend | 599 per km² | 2,297 | 3.84 km² |
| 227 | Llantrisant and Talbot GreenRhondda Cynon Taf | 592 per km² | 6,857 | 11.6 km² |
| 228 | LlanhillethBlaenau Gwent | 592 per km² | 4,375 | 7.39 km² |
| 229 | Rassau and GarnlydanBlaenau Gwent | 592 per km² | 3,899 | 6.59 km² |
| 230 | PenllergaerSwansea | 588 per km² | 3,603 | 6.13 km² |
| 231 | BlainaBlaenau Gwent | 584 per km² | 4,569 | 7.83 km² |
| 232 | Briton Ferry EastNeath Port Talbot | 581 per km² | 2,887 | 4.97 km² |
| 233 | Milford: EastPembrokeshire Coast | 581 per km² | 2,922 | 5.03 km² |
| 234 | Cwm ClydachRhondda Cynon Taf | 581 per km² | 2,812 | 4.84 km² |
| 235 | Graig and Pontypridd WestRhondda Cynon Taf | 581 per km² | 7,065 | 12.2 km² |
| 236 | MayalsSwansea | 577 per km² | 2,605 | 4.52 km² |
| 237 | Hawthorn and Lower RhydfelenRhondda Cynon Taf | 576 per km² | 2,385 | 4.14 km² |
| 238 | Mountain AshRhondda Cynon Taf | 573 per km² | 7,292 | 12.7 km² |
| 239 | CrosskeysCaerphilly | 571 per km² | 3,249 | 5.69 km² |
| 240 | TreorchyRhondda Cynon Taf | 570 per km² | 7,561 | 13.3 km² |
| 241 | Gilfach-gochRhondda Cynon Taf | 565 per km² | 3,382 | 5.99 km² |
| 242 | CaerleonNewport | 561 per km² | 7,808 | 13.9 km² |
| 243 | GoodwickPembrokeshire Coast | 554 per km² | 2,016 | 3.64 km² |
| 244 | Brackla East and Coychurch LowerBridgend | 552 per km² | 4,090 | 7.41 km² |
| 245 | BishopstonSwansea | 545 per km² | 3,288 | 6.03 km² |
| 246 | DrybridgeMonmouthshire | 540 per km² | 2,373 | 4.39 km² |
| 247 | Milford: HubberstonPembrokeshire Coast | 531 per km² | 2,570 | 4.84 km² |
| 248 | Taff's WellRhondda Cynon Taf | 528 per km² | 3,548 | 6.72 km² |
| 249 | Rogerstone NorthNewport | 526 per km² | 2,976 | 5.66 km² |
| 250 | Pontyclun EastRhondda Cynon Taf | 524 per km² | 2,784 | 5.31 km² |
| 251 | Tenby: SouthPembrokeshire Coast | 518 per km² | 2,027 | 3.91 km² |
| 252 | TredegarBlaenau Gwent | 499 per km² | 5,431 | 10.9 km² |
| 253 | Ferndale and MaerdyRhondda Cynon Taf | 496 per km² | 7,124 | 14.4 km² |
| 254 | New InnTorfaen | 495 per km² | 5,851 | 11.8 km² |
| 255 | Saundersfoot SouthPembrokeshire Coast | 489 per km² | 1,542 | 3.16 km² |
| 256 | Pontyclun WestRhondda Cynon Taf | 486 per km² | 3,249 | 6.69 km² |
| 257 | New TredegarCaerphilly | 486 per km² | 4,661 | 9.6 km² |
| 258 | Aber ValleyCaerphilly | 481 per km² | 6,385 | 13.3 km² |
| 259 | Two LocksTorfaen | 473 per km² | 5,896 | 12.5 km² |
| 260 | DyffrynNeath Port Talbot | 467 per km² | 3,273 | 7.01 km² |
| 261 | Pontypool FawrTorfaen | 466 per km² | 7,401 | 15.9 km² |
| 262 | Pontlliw and TircoedSwansea | 461 per km² | 2,503 | 5.43 km² |
| 263 | CwmtilleryBlaenau Gwent | 459 per km² | 4,401 | 9.59 km² |
| 264 | Coedffranc WestNeath Port Talbot | 458 per km² | 5,908 | 12.9 km² |
| 265 | Llantwit MajorVale of Glamorgan | 455 per km² | 9,880 | 21.7 km² |
| 266 | CaerauBridgend | 454 per km² | 6,588 | 14.5 km² |
| 267 | CornellyBridgend | 451 per km² | 7,460 | 16.5 km² |
| 268 | CrumlinCaerphilly | 449 per km² | 5,801 | 12.9 km² |
| 269 | Aberdare West and LlwydcoedRhondda Cynon Taf | 444 per km² | 9,649 | 21.7 km² |
| 270 | PenygroesCarmarthenshire | 440 per km² | 3,111 | 7.07 km² |
| 271 | LlangennechCarmarthenshire | 440 per km² | 5,390 | 12.3 km² |
| 272 | SaronCarmarthenshire | 437 per km² | 4,300 | 9.83 km² |
| 273 | Dinas PowysVale of Glamorgan | 429 per km² | 8,409 | 19.6 km² |
| 274 | Pencoed and PenprysgBridgend | 417 per km² | 9,987 | 23.9 km² |
| 275 | Tonyrefail EastRhondda Cynon Taf | 415 per km² | 6,134 | 14.8 km² |
| 276 | JohnstonPembrokeshire Coast | 411 per km² | 2,234 | 5.43 km² |
| 277 | Brynna and LlanharanRhondda Cynon Taf | 409 per km² | 9,477 | 23.2 km² |
| 278 | NelsonCaerphilly | 405 per km² | 4,427 | 10.9 km² |
| 279 | PortskewettMonmouthshire | 403 per km² | 2,644 | 6.56 km² |
| 280 | RhooseVale of Glamorgan | 398 per km² | 6,812 | 17.1 km² |
| 281 | CwmBlaenau Gwent | 396 per km² | 3,948 | 9.97 km² |
| 282 | Bryntirion, Laleston and Merthyr MawrBridgend | 391 per km² | 9,154 | 23.4 km² |
| 283 | GraigNewport | 380 per km² | 5,288 | 13.9 km² |
| 284 | Magor WestMonmouthshire | 376 per km² | 2,026 | 5.39 km² |
| 285 | CadoxtonNeath Port Talbot | 368 per km² | 1,520 | 4.13 km² |
| 286 | Llanfrechfa and PonthirTorfaen | 366 per km² | 2,003 | 5.47 km² |
| 287 | St AthanVale of Glamorgan | 364 per km² | 4,213 | 11.6 km² |
| 288 | Bryn-coch NorthNeath Port Talbot | 362 per km² | 2,078 | 5.74 km² |
| 289 | HendyCarmarthenshire | 347 per km² | 3,236 | 9.33 km² |
| 290 | BlaenavonTorfaen | 341 per km² | 6,076 | 17.8 km² |
| 291 | Pembroke: St MichaelPembrokeshire Coast | 337 per km² | 1,779 | 5.28 km² |
| 292 | MaesycwmmerCaerphilly | 333 per km² | 2,495 | 7.49 km² |
| 293 | Pentyrch and St FagansCardiff | 332 per km² | 9,588 | 28.8 km² |
| 294 | AbercarnCaerphilly | 329 per km² | 5,419 | 16.5 km² |
| 295 | Merlin's BridgePembrokeshire Coast | 327 per km² | 2,205 | 6.74 km² |
| 296 | HengoedCarmarthenshire | 319 per km² | 4,392 | 13.8 km² |
| 297 | Tredegar Park and MarshfieldNewport | 318 per km² | 11,777 | 37.1 km² |
| 298 | SirhowyBlaenau Gwent | 317 per km² | 5,232 | 16.5 km² |
| 299 | GorslasCarmarthenshire | 316 per km² | 5,213 | 16.5 km² |
| 300 | Gwaun-Cae-Gurwen and Lower BrynammanNeath Port Talbot | 311 per km² | 4,234 | 13.6 km² |
| 301 | Bryn and CwmavonNeath Port Talbot | 287 per km² | 6,602 | 23 km² |
| 302 | Glynneath Central and EastNeath Port Talbot | 285 per km² | 2,164 | 7.59 km² |
| 303 | PontarddulaisSwansea | 278 per km² | 6,905 | 24.9 km² |
| 304 | YnysdduCaerphilly | 277 per km² | 3,908 | 14.1 km² |
| 305 | AbersychanTorfaen | 275 per km² | 6,675 | 24.3 km² |
| 306 | OsbastonMonmouthshire | 273 per km² | 2,199 | 8.04 km² |
| 307 | East WilliamstonPembrokeshire Coast | 269 per km² | 1,854 | 6.89 km² |
| 308 | TreherbertRhondda Cynon Taf | 267 per km² | 5,746 | 21.5 km² |
| 309 | Ogmore ValeBridgend | 266 per km² | 3,031 | 11.4 km² |
| 310 | Pen-clawddSwansea | 258 per km² | 3,631 | 14.1 km² |
| 311 | ClydachSwansea | 251 per km² | 8,360 | 33.4 km² |
| 312 | Garw ValleyBridgend | 250 per km² | 7,697 | 30.8 km² |
| 313 | AberdulaisNeath Port Talbot | 246 per km² | 2,344 | 9.54 km² |
| 314 | Cwmllynfell and YstalyferaNeath Port Talbot | 240 per km² | 3,835 | 16 km² |
| 315 | Swiss ValleyCarmarthenshire | 238 per km² | 2,401 | 10.1 km² |
| 316 | YnysybwlRhondda Cynon Taf | 235 per km² | 4,579 | 19.5 km² |
| 317 | Nant-y-moelBridgend | 232 per km² | 2,370 | 10.2 km² |
| 318 | LlanellyMonmouthshire | 223 per km² | 4,068 | 18.2 km² |
| 319 | LlangynwydBridgend | 220 per km² | 2,960 | 13.5 km² |
| 320 | PontyberemCarmarthenshire | 218 per km² | 2,906 | 13.3 km² |
| 321 | BetwsCarmarthenshire | 214 per km² | 2,381 | 11.1 km² |
| 322 | Twyn CarnoCaerphilly | 213 per km² | 3,105 | 14.6 km² |
| 323 | Cimla and PelennaNeath Port Talbot | 204 per km² | 4,869 | 23.8 km² |
| 324 | GlanammanCarmarthenshire | 204 per km² | 2,495 | 12.3 km² |
| 325 | AberkenfigBridgend | 203 per km² | 2,482 | 12.2 km² |
| 326 | WyeshamMonmouthshire | 201 per km² | 2,112 | 10.5 km² |
| 327 | FairwoodSwansea | 201 per km² | 2,736 | 13.6 km² |
| 328 | PontardaweNeath Port Talbot | 193 per km² | 5,508 | 28.5 km² |
| 329 | Bishton and LangstoneNewport | 189 per km² | 7,018 | 37.1 km² |
| 330 | Gwynfi and CroeserwNeath Port Talbot | 183 per km² | 2,578 | 14.1 km² |
| 331 | LlandybieCarmarthenshire | 181 per km² | 4,458 | 24.6 km² |
| 332 | Neyland: WestPembrokeshire Coast | 180 per km² | 1,972 | 11 km² |
| 333 | ArgoedCaerphilly | 177 per km² | 2,764 | 15.6 km² |
| 334 | WenvoeVale of Glamorgan | 172 per km² | 3,053 | 17.8 km² |
| 335 | RogietMonmouthshire | 168 per km² | 1,798 | 10.7 km² |
| 336 | TycroesCarmarthenshire | 166 per km² | 2,804 | 16.9 km² |
| 337 | Kidwelly and St IshmaelCarmarthenshire | 166 per km² | 4,986 | 30.1 km² |
| 338 | Machen and RudryCaerphilly | 163 per km² | 5,121 | 31.4 km² |
| 339 | LlangwmPembrokeshire Coast | 160 per km² | 2,348 | 14.7 km² |
| 340 | CowbridgeVale of Glamorgan | 158 per km² | 6,789 | 42.9 km² |
| 341 | RhosNeath Port Talbot | 153 per km² | 2,472 | 16.1 km² |
| 342 | Resolven and TonnaNeath Port Talbot | 152 per km² | 5,631 | 37.1 km² |
| 343 | BlackmillBridgend | 150 per km² | 2,519 | 16.7 km² |
| 344 | LlannonCarmarthenshire | 142 per km² | 5,462 | 38.3 km² |
| 345 | Margam and Tai-bachNeath Port Talbot | 141 per km² | 7,834 | 55.4 km² |
| 346 | Llanbadoc and UskMonmouthshire | 141 per km² | 4,122 | 29.3 km² |
| 347 | CantrefMonmouthshire | 136 per km² | 2,254 | 16.5 km² |
| 348 | GarnantCarmarthenshire | 135 per km² | 2,043 | 15.1 km² |
| 349 | Llanfoist Fawr and GovilonMonmouthshire | 131 per km² | 3,872 | 29.5 km² |
| 350 | Darran ValleyCaerphilly | 127 per km² | 2,482 | 19.6 km² |
| 351 | TrimsaranCarmarthenshire | 126 per km² | 2,493 | 19.8 km² |
| 352 | Kilgetty and BegellyPembrokeshire Coast | 120 per km² | 2,337 | 19.4 km² |
| 353 | Crynant, Onllwyn and Seven SistersNeath Port Talbot | 116 per km² | 5,083 | 44 km² |
| 354 | MardyMonmouthshire | 114 per km² | 2,101 | 18.4 km² |
| 355 | LlangunnorCarmarthenshire | 113 per km² | 2,616 | 23.1 km² |
| 356 | PembreyCarmarthenshire | 111 per km² | 4,117 | 37.2 km² |
| 357 | WhitlandCarmarthenshire | 106 per km² | 2,374 | 22.3 km² |
| 358 | PennardSwansea | 102 per km² | 3,118 | 30.4 km² |
| 359 | St Bride's MajorVale of Glamorgan | 96 per km² | 4,635 | 48.2 km² |
| 360 | GlynCarmarthenshire | 94 per km² | 2,191 | 23.2 km² |
| 361 | Blaengwrach and Glynneath WestNeath Port Talbot | 94 per km² | 3,114 | 33.1 km² |
| 362 | Amroth and Saundersfoot NorthPembrokeshire Coast | 91 per km² | 1,984 | 21.7 km² |
| 363 | BurtonPembrokeshire Coast | 90 per km² | 1,834 | 20.5 km² |
| 364 | Cwarter BachCarmarthenshire | 88 per km² | 2,818 | 31.9 km² |
| 365 | LlanwernNewport | 88 per km² | 3,810 | 43.2 km² |
| 366 | Manorbier and PenallyPembrokeshire Coast | 87 per km² | 2,054 | 23.5 km² |
| 367 | St ArvansMonmouthshire | 87 per km² | 1,775 | 20.5 km² |
| 368 | Hirwaun, Penderyn and RhigosRhondda Cynon Taf | 79 per km² | 6,151 | 77.8 km² |
| 369 | LlangyfelachSwansea | 78 per km² | 2,767 | 35.5 km² |
| 370 | St Florence and St Mary Out LibertyPembrokeshire Coast | 76 per km² | 1,697 | 22.3 km² |
| 371 | CaerwentMonmouthshire | 76 per km² | 2,129 | 28.1 km² |
| 372 | RaglanMonmouthshire | 72 per km² | 2,465 | 34.1 km² |
| 373 | LampheyPembrokeshire Coast | 71 per km² | 1,714 | 24.2 km² |
| 374 | Goetre FawrMonmouthshire | 70 per km² | 2,202 | 31.4 km² |
| 375 | LlangyndeyrnCarmarthenshire | 66 per km² | 5,364 | 81.6 km² |
| 376 | LlandowVale of Glamorgan | 63 per km² | 2,128 | 33.7 km² |
| 377 | LlandeiloCarmarthenshire | 62 per km² | 2,932 | 47.4 km² |
| 378 | St Clears and LlansteffanCarmarthenshire | 59 per km² | 5,295 | 89.1 km² |
| 379 | ShirenewtonMonmouthshire | 59 per km² | 2,101 | 35.6 km² |
| 380 | Rudbaxton and SpittalPembrokeshire Coast | 57 per km² | 1,787 | 31.3 km² |
| 381 | Newport and DinasPembrokeshire Coast | 57 per km² | 1,805 | 31.9 km² |
| 382 | Peterston-super-ElyVale of Glamorgan | 54 per km² | 1,973 | 36.4 km² |
| 383 | Narberth: RuralPembrokeshire Coast | 54 per km² | 1,404 | 26.1 km² |
| 384 | Cenarth and LlangelerCarmarthenshire | 52 per km² | 5,494 | 106.5 km² |
| 385 | Cymer and GlyncorrwgNeath Port Talbot | 51 per km² | 2,111 | 41.7 km² |
| 386 | Carew and JeffreystonPembrokeshire Coast | 51 per km² | 2,118 | 41.9 km² |
| 387 | St Nicholas and LlancarfanVale of Glamorgan | 50 per km² | 2,337 | 46.6 km² |
| 388 | LlanddarogCarmarthenshire | 47 per km² | 2,068 | 44.4 km² |
| 389 | The HavensPembrokeshire Coast | 45 per km² | 1,978 | 44.3 km² |
| 390 | LetterstonPembrokeshire Coast | 42 per km² | 2,445 | 58.6 km² |
| 391 | CamrosePembrokeshire Coast | 41 per km² | 1,867 | 45.8 km² |
| 392 | St David'sPembrokeshire Coast | 39 per km² | 1,768 | 45.3 km² |
| 393 | LlanybydderCarmarthenshire | 39 per km² | 2,773 | 71 km² |
| 394 | AbergwiliCarmarthenshire | 38 per km² | 2,382 | 62.5 km² |
| 395 | SolvaPembrokeshire Coast | 37 per km² | 1,867 | 49.8 km² |
| 396 | MaenclochogPembrokeshire Coast | 37 per km² | 2,258 | 61.1 km² |
| 397 | Llanfihangel AberbythychCarmarthenshire | 36 per km² | 1,751 | 49.2 km² |
| 398 | Mitchel Troy and Trellech UnitedMonmouthshire | 35 per km² | 3,610 | 102.5 km² |
| 399 | Lampeter VelfreyPembrokeshire Coast | 35 per km² | 1,573 | 45.5 km² |
| 400 | Cilgerran and EglwyswrwPembrokeshire Coast | 32 per km² | 2,404 | 75.3 km² |
| 401 | GowerSwansea | 32 per km² | 2,965 | 93.4 km² |
| 402 | Llanfihangel-ar-ArthCarmarthenshire | 31 per km² | 2,767 | 88.9 km² |
| 403 | Crymych and Mynachlog-dduPembrokeshire Coast | 29 per km² | 2,297 | 78.3 km² |
| 404 | Llangybi FawrMonmouthshire | 28 per km² | 1,808 | 64.5 km² |
| 405 | Gobion FawrMonmouthshire | 26 per km² | 1,901 | 72.7 km² |
| 406 | Laugharne TownshipCarmarthenshire | 26 per km² | 2,626 | 100.6 km² |
| 407 | St DogmaelsPembrokeshire Coast | 26 per km² | 2,039 | 78.2 km² |
| 408 | St Ishmael'sPembrokeshire Coast | 26 per km² | 2,271 | 88 km² |
| 409 | Cynwyl ElfedCarmarthenshire | 25 per km² | 2,346 | 94.1 km² |
| 410 | DevaudenMonmouthshire | 24 per km² | 1,429 | 58.9 km² |
| 411 | Boncath and ClydauPembrokeshire Coast | 24 per km² | 1,994 | 83.7 km² |
| 412 | LlandoveryCarmarthenshire | 23 per km² | 2,658 | 115.7 km² |
| 413 | WistonPembrokeshire Coast | 23 per km² | 1,979 | 87.8 km² |
| 414 | Manordeilo and SalemCarmarthenshire | 22 per km² | 2,638 | 120.6 km² |
| 415 | LlanrhianPembrokeshire Coast | 21 per km² | 1,838 | 88.2 km² |
| 416 | LlanboidyCarmarthenshire | 20 per km² | 2,090 | 102 km² |
| 417 | MartletwyPembrokeshire Coast | 20 per km² | 1,946 | 97.4 km² |
| 418 | CrucorneyMonmouthshire | 20 per km² | 2,087 | 106.9 km² |
| 419 | TrelechCarmarthenshire | 18 per km² | 2,720 | 149.2 km² |
| 420 | HundletonPembrokeshire Coast | 18 per km² | 1,691 | 95.4 km² |
| 421 | Llantilio CrossennyMonmouthshire | 17 per km² | 1,792 | 108.1 km² |
| 422 | LlanegwadCarmarthenshire | 16 per km² | 2,400 | 148.2 km² |
| 423 | Bro GwaunPembrokeshire Coast | 16 per km² | 1,940 | 123 km² |
| 424 | CilycwmCarmarthenshire | 11 per km² | 2,619 | 248.7 km² |
| 425 | LlangadogCarmarthenshire | 10 per km² | 1,974 | 192.5 km² |