administrative county anglesey arfon blaenau gwent brecknockshire caernarfonshire cardiff cardiganshire carmarthenshire ceredigion civil parish clwyd colwyn cynon valley denbighshire dinefwr districts of wales dwyfor dyfed flintshire geographic coordinate system glamorgan gwynedd islwyn lliw valley local government in wales marford meirionnydd merionethshire merthyr tydfil mid glamorgan monmouthshire montgomeryshire municipal borough neath port talbot newport ogwr pembrokeshire powys preseli pembrokeshire radnorshire rhondda cynon taff south glamorgan south pembrokeshire swansea taff-ely torfaen vale of glamorgan wales welsh language west glamorgan wrexham wrexham rural district