This is a list of preserved counties of Wales ordered by area.
| Rank | County | Area (km²) | Style |
|---|---|---|---|
| 1 | Dyfed | 5,780 | Preserved county |
| 2 | Powys | 5,196 | Preserved county |
| 3 | Gwynedd | 3,262 | Preserved county |
| 4 | Clwyd | 2,910 | Preserved county |
| 5 | Gwent | 1,553 | Preserved county |
| 6 | West Glamorgan | 820 | Preserved county |
| 7 | Mid Glamorgan | 781 | Preserved county |
| 8 | South Glamorgan | 475 | Preserved county |
-- This is a list of preserved counties of Wales ordered by population. The figures are mid-year estimates for 2007 from the Office for National Statistics, grouping component Unitary Authority figures into their respective preserved counties [1].
| Rank | District | Population | Style |
|---|---|---|---|
| 1 | Gwent | 560,500 | Preserved county |
| 2 | Clwyd | 491,100 | Preserved county |
| 3 | South Glamorgan | 445,000 | Preserved county |
| 4 | Mid Glamorgan | 423,200 | Preserved county |
| 5 | Dyfed | 375,200 | Preserved county |
| 6 | Gwent | 365,500 | Preserved county |
| 7 | Gwynedd | 187,400 | Preserved county |
| 8 | Powys | 132,000 | Preserved county |