Since April 1st, 1996, Wales has been divided into 22 principal areas.
The principal areas are variously styled as county, county borough, city or city and county, although these distinctions are not widely respected, and all 22 areas are often referred to simply as “counties”.
According to Wikipedia, these are the highest points of the 22 principal areas of Wales:
| Rank | Unitary authority | Peak | Height (metres) | Grid reference |
| 1 | Gwynedd | Snowdon | 1085 | SH609543 |
| 2 | Conwy | Carnedd Llewelyn | 1064 | SH683644 |
| 3 | Powys | Pen y Fan | 886 | SO011215 |
| 4 | Denbighshire | Cadair Berwyn | 830 | SJ071323 |
| 5 | Wrexham | Craig Berwyn | 790 | SJ077335 |
| 6 | Carmarthenshire | Fan Foel | 781 | SN821223 |
| 7 | Ceredigion | Plynlimon | 752 | SN789869 |
| 8 | Monmouthshire | Chwarel y Fan | 679 | SO259292 |
| 9 | Neath Port Talbot | Craig y Llyn | 600 | SN906031 |
| 10 | Rhondda Cynon Taff | Craig y Llyn | c.595 | SN909031 |
| 11 | Blaenau Gwent | Coity Mountain | 581 | SO231079 |
| 12 | Torfaen | Coity Mountain | 581 | SO231079 |
| 13 | Bridgend | Mynydd Llangeinwyr | 568 | SS912947 |
| 14 | Flintshire | Moel Famau | 554 | SJ161626 |
| 15 | Pembrokeshire | Foel Cwmcerwyn | 536 | SN094311 |
| 16 | Caerphilly | Twyn Pwll Morlais | c. 535 | SO082110 |
| 17 | Merthyr Tydfil | Waun Llysiog | c. 515 | SO024161 |
| 18 | Swansea | Mynydd y Betws | 374 | SN664094 |
| 19 | Newport | Wentwood | 309 | ST411942 |
| 20 | Cardiff | Garth Hill | 307 | ST103835 |
| 21 | Isle of Anglesey | Holyhead Mountain | 220 | SH218829 |
| 22 | Vale of Glamorgan | Pantylladron | 137 | ST036739 |
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