Wards of Merthyr Tydfil County Borough

Treharris is a town and community (and electoral ward) in the Taff Bargoed Valley in the south of Merthyr Tydfil County Borough, South Wales. It is located about west of Trelewis, from which it is separated by the Taff Bargoed river, and from Nelson in Caerphilly county borough and has a population of 6,356 from the 2011 Census. As a community, Treharris includes the villages of Quakers Yard and Edwardsville. Due to steepness and narrowness of both the Taff and Taff Bargoed valleys at Treharris several notable bridges and viaducts have been built in the area.

Dowlais () is a village in the north-east of the county borough of Merthyr Tydfil, in South Wales. The name is derived from the Welsh du, which means 'black', and glais, which means 'stream'. Dowlais is notable within Wales and Britain for its historic association with ironworking; once employing, through the Dowlais Iron Company, over 7,000 people, the works being at one stage the largest in the world.

Vaynor (, ) is a village and community (formerly a parish) in Merthyr Tydfil County Borough in Wales, United Kingdom. The population of the community at the 2011 census was 3,551.

community and electoral ward of the county borough of Merthyr Tydfil, in Wales

''For Trevithick's Pen-y-darren locomotive, see Richard Trevithick.''

Cyfarthfa is a community and electoral ward in the west of the town of Merthyr Tydfil in Merthyr Tydfil County Borough, Wales.

community in Merthyr Tydfil, Wales