Rhondda Cynon Taf in the context of "Treorchy"

The Cardiff Capital Region (CCR; Welsh: Prifddinas-Ranbarth Caerdydd) is a city region in Wales, centred on the capital city of Wales, Cardiff, in the southeast of the country. It is a partnership between the ten local authorities of Blaenau Gwent, Bridgend, Caerphilly, Cardiff, Merthyr Tydfil, Monmouthshire, Newport, Rhondda Cynon Taf, Torfaen, and the Vale of Glamorgan, local businesses in southeast Wales and other organisations. The regional city deal is funded by the UK Government and Welsh Government. The Cardiff Capital Region includes the cities of Cardiff and Newport, and most of the South Wales Valleys, with the region being coterminous with the area defined as South East Wales.

The Vale of Glamorgan (Welsh: Bro Morgannwg [ˈbroː mɔrˈɡanʊɡ]), locally referred to as The Vale, is a county borough in the south-east of Wales. It borders Bridgend County Borough to the west, Cardiff to the east, Rhondda Cynon Taf to the north, and the Bristol Channel to the south. With an economy based largely on agriculture and chemicals, it is the southernmost unitary authority in Wales. Attractions include Barry Island Pleasure Park, the Barry Tourist Railway, Medieval wall paintings in St Cadoc's Church, Llancarfan, Porthkerry Park, St Donat's Castle, Cosmeston Lakes Country Park and Cosmeston Medieval Village. The largest town is Barry. Other towns include Penarth, Llantwit Major, and Cowbridge. There are many villages in the county borough.

Powys (/ˈpoʊɪs, ˈpaʊɪs/ POH-iss, POW-iss, Welsh: [ˈpou̯ɪs]) is a county and preserved county in Wales. It borders Gwynedd, Denbighshire and Wrexham to the north; the English ceremonial counties of Shropshire and Herefordshire to the east; Monmouthshire, Blaenau Gwent, Merthyr Tydfil, Caerphilly, Rhondda Cynon Taf and Neath Port Talbot to the south; and Carmarthenshire and Ceredigion to the west. The largest settlement is Newtown, and the administrative centre is Llandrindod Wells.

Powys is the largest and most sparsely populated county in Wales, having an area of 5,181 km (2,000 sq mi) and a population of 135,059 in 2024. While largely rural, its towns include Welshpool in the north-east, Newtown in the north-centre, Llandrindod Wells in the south-centre, Brecon in the south, Ystradgynlais in the far south-west, and Machynlleth in the far west. The Welsh language can be spoken by 16.4% of the population. The boundaries of Powys largely follow those of the historic counties of Montgomeryshire, Radnorshire, and Brecknockshire.

Neath Port Talbot (Welsh: Castell-nedd Port Talbot) is a county borough in the south-west of Wales. Its principal towns are Neath, Port Talbot, Briton Ferry and Pontardawe. The county borough borders Bridgend County Borough and Rhondda Cynon Taf to the east, Powys and Carmarthenshire to the north; and Swansea to the west.

Neath Port Talbot is the eighth-most populous local authority area in Wales and the third most populous county borough. The population at the 2011 census was 139,812. The population in the coastal areas is mainly English-speaking, whereas in the valleys in the north of the borough there are many who are Welsh-speaking.

Hopkinstown (Welsh: Trehopcyn) is a small village to the west of Pontypridd in the county borough of Rhondda Cynon Taf, Wales, alongside the River Rhondda. Hopkinstown is a former coalmining and industrial community, now a district in the town of Pontypridd within the Rhondda electoral ward. Neighbouring settlements are Pwllgwaun, Trehafod and Pantygraigwen, and the sub-districts of Troed-Rhiw-Trwyn and Gyfeillion.

Llantrisant (Welsh pronunciation: [ɬanˈtrɪsant]; "Parish of the Three Saints") is a town and community in the county borough of Rhondda Cynon Taf, Wales. It lies within the historic county boundaries of Glamorgan, on the River Ely and the Afon Clun. The three saints of the town's name are Illtyd, Gwynno, and Dyfodwg. Llantrisant is a hilltop settlement, at an altitude of 174 m (571 ft) above sea level. The town is home to the Royal Mint.

Nantgarw is a village in the county borough of Rhondda Cynon Taf, Wales, near Cardiff.

From an electoral and administrative perspective Nantgarw falls within the ward of Taff's Well, a village some 2+1⁄2 miles (4 km) south, but historically fell within the boundaries of Caerphilly, which is a major town located less than 2+1⁄2 miles (4 km) to the east.

Merthyr Tydfil County Borough (Welsh: Bwrdeistref Sirol Merthyr Tudful) is a county borough in the south-east of Wales. In 2024, it had an estimated population of 58,972, making it the smallest local authority in Wales by population. 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. The area was awarded county borough status in 1908 until the original county borough was abolished in 1974. In 1996, Merthyr Tydfil became a principal area and one that is styled as a "county borough" in recognition of its historical status.

Pontypridd (/ˌpɒntɪˈpriːð/ PON-tih-PREEDH, Welsh: [ˌpɔntəˈpriːð]), colloquially referred to as Ponty, is a town and a community in Rhondda Cynon Taf, South Wales, approximately 10 miles north west of Cardiff city centre.