Rhondda Cynon Taff (Welsh: Rhondda Cynon Tâf) is a county borough in Glamorgan, south Wales.
The district borders Merthyr Tydfil and Caerphilly to the east, Cardiff and the Vale of Glamorgan to the south, Bridgend and Neath Port Talbot to the west and Powys to the north.
The county borough was formed on April 1, 1996, by the merger of the former Mid Glamorgan districts of CynonValley, Rhondda and Taff-Ely apart from Pentyrch, which was added to Cardiff.
With a population of approximately 63,000 people, the CynonValley, part of the local authority area known as Rhondda Cynon Taff, lies in the heart of industrial South Wales.
The CynonValley is a diverse, yet close knit mixture of small communities.
CynonValley is made up of 13 electoral wards of Rhondda Cynon Taff County Borough Council in the South Wales Central Electoral Region.