List of built-up areas in Wales by population explained

The following is a list of built-up areas in Wales by population according to the 2021 and 2011 Census.

2021

This is a list of built-up areas as of the 2021 census.[1]

Over 10,000

Built-up areaWelsh namePopulation
Caerdydd 348,535
Abertawe 170,085
Casnewydd 130,890
Y Barri 56,605
BridgendPen-y-bont 51,760
CwmbranCwmbrân 47,090
WrexhamWrecsam 44,785
LlanelliLlanelli 42,155
NeathCastell-nedd 40,730
Merthyr TydfilMerthyr Tudful 39,535
AberdareAberdâr 37,675
CaerphillyCaerffili 33,105
PontypriddPontypridd 31,900
Port TalbotPort Talbot 31,555
Colwyn BayBae Colwyn 29,275
PontypoolPont-y-pŵl 29,070
PenarthPenarth 28,395
RhylY Rhyl 26,990
Ebbw ValeGlynebwy 19,630
MaestegMaesteg 18,335
TonypandyTonypandy 17,210
BangorBangor 16,990
Connah's QuayCei Connah 16,770
PrestatynPrestatyn 16,675
CarmarthenCaerfyrddin 16,455
PorthcawlPorthcawl 15,795
ConwyConwy 15,715
RiscaRhisga 15,195
LlandudnoLlandudno 14,710
AberystwythAberystwyth 14,640
TredegarTredegar 14,530
HawardenPenarlâg 14,280
Milford HavenAberdaugleddau 14,250
Church VillagePentre'r Eglwys 14,155
GorseinonGorseinon 14,110
PyleY Pîl 14,075
AbergavennyY Fenni 13,695
BuckleyBwcle 13,560
PorthY Porth 13,350
RhonddaCwm Rhondda 13,265
Mountain AshAberpennar 13,000
RhosllanerchrugogRhosllanerchrugog 12,785
FlintY Fflint 12,780
BlackwoodCoed Duon 12,620
HaverfordwestHwlffordd 12,085
ChepstowCas-gwent 11,935
Sarn 11,870
Ystrad MynachYstrad Mynach 11,855
HolyheadCaergybi 11,755
TonyrefailTonyrefail 11,440
Newtown (Powys) Y Drenewydd10,885
BaglanBaglan 10,510
MonmouthTrefynwy 10,325
AbertilleryAbertyleri 10,245

Under 10,000

Built-up areaPopulation
Mold9,890
9,835
9,815
Pembroke Dock9,655
9,360
Brynteg (Wrexham) 9,225
Pencoed9,115
9,020
Abergele8,535
Clydach (Swansea) 8,445
Ammanford8,285
Brecon8,255
8,105
Denbigh8,075
Bargoed8,035
Pembroke7,965
Dinas Powys7,890
Ystalyfera7,830
Holywell (Flintshire) 7,735
Treorchy7,650
7,585
Rogerstone7,550
Abersychan7,495
Gowerton7,445
Beddau7,350
Caerleon7,330
Gwersyllt7,110
Acrefair and Cefn Mawr6,905
Rhoose6,780
Broughton (Flintshire) 6,530
Pontarddulais6,515
Shotton6,500
Bedwas6,460
Abercynon6,375
Cross Hands and Pen-y-groes6,340
Oakdale6,130
5,945
5,800
Undy and Magor5,740
5,700
5,640
5,640
5,540
5,455
5,430
5,425
5,345
5,260
5,250
5,125
5,045
4,995
4,965
4,945
4,740
4,735
4,665
4,630
4,580
4,555
4,545
Cwmafan (Cwmavon) 4,525
Hope (Flintshire) 4,420
4,415
Ferndale4,300
4,280
Nelson (Caerphilly) 4,240
4,200
4,200
4,090
Tumble4,040
4,030
3,935
3,925
3,865
3,825
3,790
3,785
3,775
3,765
3,765
3,755
3,750
3,645
3,620
3,580
3,555
3,550
3,545
3,535
3,485
3,450
3,420
3,410
3,300
3,290
3,285
3,250
3,150
3,135
3,100
3,100
3,050
3,045
2,995
2,910
2,910
2,905
Aston (Flintshire) 2,845
2,840
2,765
2,760
2,760
2,745
2,740
2,720
2,665
2,635
2,620
2,600
2,575
2,560
2,560
2,515
2,505
2,505
2,480
2,465
2,450
2,445
2,430
2,425
2,425
2,385
2,375
2,375
2,365
2,330
2,310
2,300
2,300
2,240
2,230
2,220
2,200
2,190
2,185
2,180
2,160
2,160
2,135
2,110
2,095
2,095
2,075
2,065
2,040
2,020
2,020
2,005
2,005
2,000
Bala (Y Bala) 1,990
1,985
1,985
1,975
1,950
1,935
1,930
1,905
1,845
1,840
1,840
1,835
1,830
1,825
1,815
1,795
1,790
1,790
1,785
1,780
1,780
1,770
1,765
1,735
1,730
1,730
1,725
1,720
1,715
Sychdyn (Soughton) 1,695
Glan Conwy (Llansanffraid Glan Conwy) 1,665
1,660
1,655
1,625
1,595
1,535
1,530
1,525
1,505
1,485
1,480
1,475
1,475
1,465
1,460
1,455
1,445
1,435
1,425
1,410
1,400
1,400
1,395
1,395
1,385
1,380
1,375
1,355
1,350
1,350
1,350
Cwmllynfell and Ystradowen 1,345
1,345
1,340
1,330
1,320
1,315
1,305
1,300
1,295
1,290
1,280
1,270
1,260
1,260
1,255
1,255
1,245
1,195
1,180
1,175
1,165
1,160
1,155
1,150
1,145
1,145
1,130
1,120
1,120
1,115
1,105
1,100
1,095
1,095
1,090
1,085
1,080
1,075
1,070
1,065
1,060
1,045
1,040
1,040
1,035
1,030
1,025
1,015
1,015
1,000
990
990
985
975
970
970
965
960
955
955
950
935
930
930
930
925
920
920
910
910
910
Gwernaffield (Gwernaffield-y-Waun) 905
905
895
890
890
885
885
885
880
880
865
865
855
855
840
840
840
840
835
835
835
830
830
825
825
820
820
820
815
815
810
805
800
795
795
790
790
790
785
785
780
780
775
765
755
755
755
740
740
735
730
730
730
Abercraf (Abercrave) 725
720
715
710
710
705
705
700
695
690
690
Clynderwen (Clunderwen) 685
680
665
665
655
655
655
655
645
645
645
640
640
630
630
630
630
625
625
625
620
615
615
610
605
600
600
New Hedges and Twy Cross 600
600
595
590
585
570
570
570
565
560
560
550
550
545
Aberdyfi (Aberdovey) 540
535
530
525
525
520
520
515
515
510
510
505
Ffynnongroew (Ffynnongroyw) 495
485
485
485
485
480
475
475
475
470
470
470
460
455
450
450
445
445
435
435
430
430
430
430
425
425
425
St Donats425
420
415
415
410
410
410
410
405
400
395
390
390
385
385
380
375
375
370
365
365
365
360
360
355
355
355
355
350
350
350
350
345
345
340
340
340
335
335
330
325
325
325
320
320
315
315
315
310
310
310
310
310
305
305
300
300
295
295
290
290
290
290
290
285
285
285
280
280
280
275
275
265
260
260
255
255
255
250
250
235
215
215
170
130
125
115

2011

RankBuilt-up AreaPopulation
(2011 Census)
Notes
1Cardiff (built-up area)447,287Includes Caerphilly/Pontypridd/Penarth
2Newport (built-up area)306,844Includes Cwmbran/Pontypool/Blackwood
3Swansea (built-up area)300,352Includes Neath/Port Talbot/Pontardawe/Ystradgynlais
4Wrexham (built-up area)65,692Includes Rhostyllen/Gwersyllt/Brymbo
5Tonypandy62,545Includes Treorchy/Porth
6Bridgend58,380Includes Wild Mill/Tondu/Sarn
7Barry54,673Includes Sully
8Llanelli49,591Includes Llangennech
9Rhyl/Prestatyn (built-up area)46,267
10Merthyr Tydfil43,820Includes Dowlais/Gellideg
11Bay of Colwyn34,284
12Ebbw Vale/Brynmawr/Nantyglo33,068
13Aberdare31,135
14Flint26,442 Includes Holywell/Bagillt
15Rhosllanerchrugog25,362
16Ammanford23,709
17Church Village/Llantwit Fardre23,277
18Maesteg21,001
19Gorseinon20,581
20Ystrad Mynach19,204
21Aberystwyth18,749
22Kinmel Bay/Abergele18,705
23Bangor17,988
24Connah's Quay16,774
25Chepstow16,169
26Carmarthen15,854
27Porthcawl15,672
28Llandudno15,371
29Risca14,958
30Tredegar14,855
31Abergavenny14,651
32Haverfordwest14,596
33Llantrisant14,422
34Llantwit Major14,384
35Pyle13,701
36Milford Haven13,582
37Splott13,261
38Treharris12,352
39Bargoed11,900
40Holyhead11,431
41Newtown11,357
42Mountain Ash11,230
43Caldicot11,200
44Bryn Pydew11,109
45Llanrumney11,060
46Abertillery10,946
47Monmouth10,110
48Mold10,058
49Pembroke Dock9,753
50Caernarfon9,730
51Tonyrefail9,317
52Pencoed9,166
53Pontarddulais9,073
54Llandaff8,997
55Caerleon8,747
56Rhymney8,537
57Denbigh8,514
58Burry Port8,310
59Brecon8,250
60Pembroke7,552
61Ferndale7,338
62Hirwaun7,247
63Brynna6,686
64Abertridwr6,504
65Radyr6,417
66Rhoose6,160
67Abercynon5,983
68Broughton5,974
69Welshpool5,948
70Undy5,914
71Coedpoeth5,723
72Gwaun-Cae-Gurwen/Brynamman5,692
73Blaenavon5,647
74Ogmore Vale/Nantymoel5,461
75Ruthin5,461
76Glyn-neath5,419
77Cwmavon5,336
78Llandrindod Wells5,309
79Cardigan5,301
80Gresford5,010
81New Tredegar4,966
82Menai Bridge4,958
83Llangefni4,864
84Bethesda4,735
85Hope4,706
86Tenby4,696
87Llay4,681
88Gilfach Goch4,395
89Glanaman4,384
90Pontycymer4,288
91Pwllheli4,076
92Glyncoch4,020
93Conwy3,873
94Cowbridge3,804
95Llanbradach3,746
96Rhuddlan3,709
97Neyland3,708
98Blaenau Ffestiniog3,662 Does not include Tanygrisiau
99Llanfairfechan3,637
100Penyffordd3,554
101Aberfan3,547
102Ynysybwl3,503
103Murton3,500
104Llangollen3,466
105Fishguard3,419
106Saundersfoot3,361
107St Asaph3,355
108Llanrwst3,323
109Amlwch3,211
110Maerdy3,160
111Llanfair Pwllgwyngyll3,107
112Tywyn3,097
113Marshfield3,054
114Llanharry3,035
115Llanhilleth2,990
116Porthmadog2,981
117Lampeter2,970
118Llanidloes2,929
119Usk2,834
120Builth Wells2,829
121Llandybie2,813
122Kidwelly2,782
123Cwm2,739
124Talbot Green2,734
125Dolgellau2,688
126Llanddulas/Mynydd Marian2,674
127St Clears2,663
128Penmaenmawr2,535
129Creigiau2,380
130Machen2,362
131Valley2,361
132Cwmfelinfach/Ynysddu2,342
133Barmouth2,315
134Pentyrch2,287
135Y Felinheli2,284
136Leeswood2,282
137Narberth2,265
138Gilwern2,263
139Benllech2,236
140Bettws2,253
141Machynlleth2,235
142Seven Sisters2,123
143Tanyfron2,090
144Resolven2,068
145Llandovery2,065
146Crickhowell2,063
147Southgate2,004
148Underwood1,976
149Bala1,974
150Kilgetty1,968
151Johnston1,941
152Pen-clawdd1,935
153Llanrug1,916
154Newcastle Emlyn1,883
155Llanberis1,844
156Rhayader1,824
157Rogiet1,813
158Llandeilo1,795
159Bodelwyddan1,794
160Penygroes1,793
161Harlech1,762
162Criccieth1,753
163Llansanffraid Glan Conwy1,735
164Gwernaffield-y-Waun/Pantymwyn1,734
165Goodwick1,720
166Soughton1,710
167Higher Kinnerton1,697
168Pontyberem1,695
169Aberporth1,648
170Pontlliw1,645
171Mostyn1,606
172Crynant1,602
173Trimsaran1,584
174Three Crosses1,583
175Bow Street1,572
176Waunlwyd1,556
177Gaerwen1,551
178Penrhyndeudraeth1,546
179Pen-twyn (Caerphilly)1,540
180Talybont (Gwynedd)1,540
181Trearddur1,537
182Whitland1,514
183Pont Rhyd-y-cyff, Llangynwyd1,505
184Markham1,495
185Llandysul1,484
186Pontyates1,449
187Govilon1,447
188Four Crosses1,438
189Aberaeron1,422
190St Davids1,408
191Cwmllynfell1,405
192Deiniolen1,379
193Nefyn1,373
194Beaumaris1,370
195Blaengwynfi1,362
196Treuddyn1,360
197Dwygyfylchi1,355
198Waungilwen1,338
199Cefn Cribwr1,324
200Penrhyn-coch1,316
201Penperlleni1,311
202Tregarth1,307
203Coedhirwaun1,299
204Borth1,269
205Talgarth1,268
206Gronant1,258
207Fochriw1,250
208Letterston1,245
209Guilsfield1,220
210Llanybydder1,218
211Tregaron1,213
212Pentlepoir1,211
213Caerwent1,201
214Waunfawr1,190
215Cemaes1,187
216Raglan1,183
217Bethel1,171
218Wenvoe1,155
219Gwernymynydd1,141
220Llanerchymedd1,133
221Grovesend1,131
222Bedlinog1,112
223Bangor-on-Dee1,110
224Pencader1,107
225Llanfyllin1,105
226Glyncorrwg1,096
227Pentre Halkyn1,094
228Marchwiel1,092
229Talysarn1,086
230Llanilar1,085
231Llanfair Caereinion1,055
232Bodedern1,051
233Trefechan1,042
234Llangynidr1,036
235Crofty1,012
236Rhosneigr1,008
237Deri1,006
238Northop1,001
239Trefnant993
240Pont-henri987
241Montgomery986
242Llangeinor973
243Overton-on-Dee965
244Bontnewydd951
245Caerwys950
246Bryn923
247Abermule900
248Newborough892
249Tregynon892
250Argoed891
251Tircoed884
252Broad Haven880
253Groeslon880
254Ogmore-by-Sea878
255Llangwm875
256Llechryd875
257Craig Cefn Parc874
258Cwmann872
259Llannon869
260Cilgerran865
261Llan Ffestiniog864
262Henllan862
263Morfa Nefyn857
264Sageston857
265Bwlchgwyn855
266Newport (Pembrokeshire)851
267Llangoed849
268Penally848
269Ferryside846
270Hook (Pembrokeshire)838
271New Brighton838
272Pontrhydyfen830
273Cosheston828
274Laugharne817
275Caersws816
276Dinas Cross815
277Trefor814
278Glyn Ceiriog804
279Kerry785
280Abersoch783
281Clyro781
282Ewenny768
283St Arvans765
284Llanfihangel yn Nhowyn757
285St Florence756
286Pen-y-ffordd748
287Llandyrnog747
288Llansanffraid-ym-Mechain747
289Forden745
290Parc-Seymour744
291St Brides Major741
292Pant-yr-awel734
293Maenclochog731
294Carno730
295Dyffryn Cellwen727
296Aberdovey725
297Fairbourne721
298Rhigos718
299Gwalchmai715
300Waunllapria714
301Pontrhydfendigaid712
302Rhosybol712
303Moelfre710
304Solva710
305Crymych704
306Wick698
307Abercrave696
308New Quay694
309Clydach692
310Llanddona691
311Groes-faen685
312Llandre679
313Clunderwen677
314Rhostryfan675
315Hill Mountain673
316Carway672
317Trelogan671
318Flint Mountain670
319Llangattock662
320Tal-y-bont (Ceredigion)662
321Mynydd-bach/Shirenewton657
322Blackmill654
323Llangadog650
324Llanrhystud646
325Chwilog640
326Llanddewi Brefi640
327Pwllmeyric635
328Jameston634
329Llanwrtyd Wells630
330Trawsfynydd628
331Templeton627
332Bryncrug622
333Brawdy620
334Stepaside619
335Llanbedrog613
336Rosemarket613
337Lixwm610
338Cross Lanes609
339Froncysyllte606
340Penley606
341Trefriw605
342Dwyran603
343Llanon598
344Ystrad Aeron596
345Penysarn595
346Lamphey593
347Abergwili589
348Llanfechell589
349Crundale584
350Meidrim582
351Llandinam576
352Rhosesmor575
353Newbridge-on-Wye566
354Pentraeth557
355St Donat's555
356Llandogo547
357Cynwyd542
358Heol-y-Cyw538
359Coelbren537
360Rhydymwyn537
361Mynytho536
362Ffairfach534
363Llwyngwril526
364Morfa Bychan526
365Nantgaredig524
366Penrhiw-llan521
367Llandissilio513
368Henfynyw512
369Llanrhidian512
370Llanellen506
371Llanarth503
372Spittal494
373Bronllys491
374Cwrt y Gollen487
375St Ishmael's478
376Corwen477
377South Cornelly471
378Penparc470
379Roch463
380Dolgarrog446
381Llangybi444
382Reynoldston439
383Hundleton435
384Blaenau425
385Llansteffan424
386Arddleen418
387St Nicholas417
388Catbrook412
389Llanrhaeadr-ym-Mochnant408
390Bryngwran405
391Bonvilston392
392Hengell Uchaf Estate388
393Llanbedr385
394Llangristiolus384
395Llandevaud376
396Norton (Powys)375
397Llangors371
398The Narth369
399Pontneddfechan366
400Llanmadoc365
401Pen-twyn (Monmouthshire)358
402Peniel358
403Caergeiliog355
404Tavernspite349
405Talacre347
406Pendine346
407Waterston335
408Crossgates327
409Keeston324
410Sudbrook322
411Clarbeston Road318
412Meifod317
413Betws-yn-Rhos312
414Llanbedr-Dyffryn-Clwyd306
415Pentre Maelor305
416Crymlyn Burrows303
417Gwynfryn303
418Clawdd Poncen300
419Mynyddygarreg299
420Cross Inn292
421Cerrigydrudion289
422Bull Bay287
423Llanwrda287
424Berriew283
425St Fagans282
426Llanyre279
427Rhossili278
428Capel Bangor256
429Betws-Y-Coed255
430Malltraeth255
431Freshwater East250
432Pentre-cwrt247
433Sennybridge230
434Port Eynon226
435Talybont-on-Usk219
436Ynysmaerdy205
437Blaenannerch131

See also

Notes and References

  1. Within the dataset under 1d.Web site: 2 August 2023 . Towns and cities, characteristics of built-up areas, England and Wales: Census 2021 . 3 August 2023.