Aberaman, Abercanaid, Abercwmboi, Aberdare / Aberdâr, Aberfan, Abermorlais, Abernant, Bedlinog, Bute Town, Cae-draw, Cae-pant-tywyll, Caegarw, Cefn-coed-y-cymmer, Cefnpennar, Clwydyfagwyr, Cwmbâch, Cwmdare, Cwmfelin, Cwmpennar, Darranlas, Dowlais, Dowlais Top, Ffos-y-frân, Fochriw, Gadlys, Galon-Uchaf, Gellideg, Georgetown, Glebeland, Glenboi, Godreaman, Gurnos, Heolgerrig, Incline Top, Llechryd, Llwydcoed, Llwyn-on Village, Merthyr Tydfil / Merthyr Tudful, Merthyr Vale / Ynysowen, Morgan Town, Morlais Castle, Mountain Ash / Aberpennar, Mountain Hare, Pant, Pen-y-bank, Pen-y-Darren, Pen-y-wern, Pentrebach, Penyard, Penyrheol, Penywaun, Pontlottyn, Pontsticill, Princetown, Rhyd-y-car, Rhymney / Rhymni, Robertstown, Thomas Town, Tre-Gibbon, Tre-Ifor, Trecynon, Trefechan, Troedyrhiw, Twynyrodyn, Tydfil's well, Upper Abercanaid, Vaynor / Faenor, Williamstown, Winch Fawr, Ynys-fach, Ysgubor Newydd