Editing County town (section)

===Wales===
{| class="wikitable sortable"
|-
! County council !! Date !! Headquarters
|-
|  [[Isle of Anglesey|Anglesey]]||1889 to 1974||[[Beaumaris]]<sup>1</sup>
|-
|  [[Brecknockshire]]||1889 to 1974||[[Brecon]]
|-
|  [[Caernarfonshire|Caernarvonshire]]||1889 to 1974||[[Caernarfon]]
|-
|  [[Carmarthenshire]]||1889 to 1974<br />1996 onwards||[[Carmarthen]]
|-
|  [[Ceredigion|Cardiganshire]]||1889 to 1974||[[Aberystwyth]]<sup>2</sup>
|-
|  [[Ceredigion]]||1996 onwards||[[Aberaeron]]
|-
|  [[Clwyd]]||1974 to 1996||[[Mold, Wales|Mold]]
|-
|  [[Denbighshire (historic)|Denbighshire]]||1889 to 1974||[[Denbigh]]
|-
|  [[Dyfed]]||1974 to 1996||[[Carmarthen]]
|-
|  [[Flintshire (historic)|Flintshire]]||1889 to 1974||[[Mold, Wales|Mold]]
|-
|  [[Glamorgan]]||1889 to 1974||[[Cardiff]] (county borough)
|-
|  [[Gwent (county)|Gwent]]||1974 to 1996||[[Newport, Wales|Newport]] (1974–78), [[Cwmbran]] (1978–96)
|-
|  [[Gwynedd]]||1974 onwards||[[Caernarfon]]
|-
|  [[Mid Glamorgan]]||1974 to 1996||[[Cardiff]] (extraterritorial)
|-
|  [[Merionethshire]]||1889 to 1974||[[Dolgellau]]
|-
|  [[Montgomeryshire]]||1889 to 1974||[[Welshpool]]
|-
|  [[Monmouthshire (historic)|Monmouthshire]]||1889 to 1974||[[Newport, Wales|Newport]] (county borough from 1891)
|-
|  [[Radnorshire]]||1889 to 1974||[[Presteigne]]<sup>3</sup>
|-
|  [[Pembrokeshire]]||1889 to 1974<br />1996 onwards||[[Haverfordwest]]
|-
|  [[Powys]]||1974 onwards||[[Llandrindod Wells]]
|-
|  [[South Glamorgan]]||1974 to 1996||[[Cardiff]]
|-
|  [[West Glamorgan]]||1974 to 1996||[[Swansea]]
|-
|  [[Isle of Anglesey]]||1996 onwards||[[Llangefni]]
|}
# Due to its better transport links and more central location, some administrative functions were moved to [[Llangefni]].
# [[Cardigan, Ceredigion|Cardigan]] was often still referred to as 'the county town' due to the name link. However, assizes were held at [[Lampeter]] while Aberystwyth housed the administration of the county council. Aberystwyth was therefore the de facto county town.
# Due to its better transport links and more central location, some administrative functions were moved to [[Llandrindod Wells]].