Merthyr Tydfil (County), Wales, UK

Also/previously known as: Merthyr Tudful (Sir), Cymru, DU

Contains New Hall, Pentrebach, Merthyr Tydfil , Merthyr Tydfil, Merthyr Tydfil County, Wales, UK , Quakers Yard, Merthyr Tydfil, Glamorgan

Current borough boundaries date back to 1974, when Merthyr Tydfil became a local government district in the administrative county of Mid Glamorgan.
Reverted to a county borough again on 1 April 1996.