This is a list of principal areas of Wales ordered by population. The populations given are those recorded in the 2001 UK census.
| Rank | District | Population | Type
|
|---|
| 1 | Cardiff | 305,353 | City
|
| 2 | Rhondda Cynon Taff | 231,946 | County borough
|
| 3 | Swansea | 223,301 | City
|
| 4 | Carmarthenshire | 172,842 | County
|
| 5 | Caerphilly | 169,519 | County borough
|
| 6 | Flintshire | 148,594 | County
|
| 7 | Newport | 137,011 | City
|
| 8 | Neath Port Talbot | 134,468 | County borough
|
| 9 | Bridgend | 128,645 | County borough
|
| 10 | Wrexham | 128,476 | County borough
|
| 11 | Powys | 126,354 | County
|
| 12 | Vale of Glamorgan | 119,292 | County borough
|
| 13 | Gwynedd | 116,843 | County
|
| 14 | Pembrokeshire | 114,131 | County
|
| 15 | Conwy | 109,596 | County borough
|
| 16 | Denbighshire | 93,065 | County
|
| 17 | Torfaen | 90,949 | County borough
|
| 18 | Monmouthshire | 84,885 | County
|
| 19 | Ceredigion | 74,941 | County
|
| 20 | Blaenau Gwent | 70,064 | County borough
|
| 21 | Anglesey | 66,829 | County
|
| 22 | Merthyr Tydfil | 55,981 | County borough
|
See also
