Merthyr Tydfil County Borough (Welsh: Bwrdeistref Sirol Merthyr Tudful) is a county borough (since 1908) in the south-east of Wales. In mid 2018, it had an estimated population of 60,183 making it the smallest local authority in Wales by both population and land area. It is located in the historic county of Glamorgan and takes its name from the town with the same name. The county borough consists of the northern part of the Taff Valley and the smaller neighbouring Taff Bargoed Valley. It borders the counties of Rhondda Cynon Taf to the west, Caerphilly County Borough to the east, and Powys to the north. (Source: Wikipedia.org, CC BY-SA)