This is a list of principal areas of Wales ordered by area.

Rank	District	Area (km²)	Type
1	Powys	5,196	County
2	Gwynedd	2,548	County
3	Carmarthenshire	2,395	County
4	Ceredigion	1,795	County
5	Pembrokeshire	1,590	County
6	Conwy	1,130	County borough
7	Monmouthshire	850	County
8	Denbighshire	844	County
9	Anglesey	714	County
10	Wrexham	498	County borough
11	Neath Port Talbot	442	County borough
12	Flintshire	438	County
13	Rhondda Cynon Taff	424	County borough
14	Swansea	378	City
15	Vale of Glamorgan	335	County borough
16	Caerphilly	278	County borough
17	Bridgend	246	County borough
18	Newport	190	City
19	Cardiff	140	City
20	Torfaen	126	County borough
21	Merthyr Tydfil	111	County borough
22	Blaenau Gwent	109	County borough

See also

• List of Welsh principal areas by population
• List of Welsh principal areas by percentage Welsh language
• List of English districts by area
• List of Scottish districts by area