- Aberaman
- Abercanaid
- Abercwmboi
- Abercynon
- Aberdar (Aberdare)
- Aberpennar (Mountain Ash)
- Afon Taf Fawr
- Beddau
- Bedlinog
- Blaen Clydach
- Blaencwm
- Blaenllechau
- Blaenrhondda
- Bryn
- Bryn Golau
- Bryncae
- Brynna
- Brynsadler
- Carnetown
- Cefn Rhigos
- Cefn-coed-y-cymmer
- Cefnpennar
- Church Village
- Cilfynydd
- Clwydyfagwyr
- Coedely
- Cross Inn
- Cwmaman
- Cwmbach
- Cwmdare
- Cwm-hwnt
- Cwmparc
- Cwmpennar
- Cynon
- Dan Caerlan
- Dolau
- Edmondstown
- Edwardsville
- Efail Isaf
- Felindre
- Ferndale
- Fernhill
- Ffos-y-fran
- Gadlys
- Galon Uchaf
- Gelli
- Gellideg
- Gilfach Goch
- Glyncoch
- Glyntaff
- Groes-faen
- Groes-wen
- Gurnos
- Hawthorn
- Hendreforgan
- Heolgerrig
- Hirwaun
- Hopkinstown
- Llanharan
- Llanharry
- Llantrisant
- Llantwit Fardre
- Llwydcoed
- Llwyn-on Village
- Llwynypia
- Maerdy
- Maesycoed
- Merthyr Tydfil
- Miskin
- Miskin
- Mount Pleasant
- Mountain Ash (Aberpennar)
- Mynachdy
- Nant-ddu
- Nantgarw
- Newtown
- Penderyn
- Penrhiwceiber
- Penrhys
- Pentre
- Pentrebach
- Pentrebach
- Pentwyn
- Pentwyn Berthlwyd
- Pen-y-Darren
- Penygraig
- Pen-y-rhiw
- Penywaun
- Perthcelyn
- Pont Sion Norton
- Pontyclun
- Rhigos
- Rhiwinder
- Rhondda
- Rhondda
- Rhydyfelin
- Robertstown
- Stanleytown
- Taff
- Talbot Green
- Thomastown
- Ton Pentre
- Ton-teg
- Tonyrefail
- Trallwn
- Trealaw
- Trecynon
- Tre-Gibbon
- Treharris
- Tre-Ifor
- Trelewis
- Treorchy (Treorci)
- Treorci (Treorchy)
- Twynyrodyn
- Tyle-garw
- Tylorstown
- Tynant
- Tynewydd
- Tyntetown
- Ty'n-y-bryn
- Upper Boat
- Wattstown
- Williamstown
- Ynysboeth
- Ynyshir
- Ynysmaerdy
- Ynyswen
- Ynysybwl
- Ystrad
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