Aberaman, Abercanaid, Abercwmboi, Aberdare / Aberdâr, Abermorlais, Abernant, Blaenllechau, Blaenrhondda, Cae-draw, Cae-pant-tywyll, Cefn Rhigos, Cefn-coed-y-cymmer, Cefnpennar, Clwydyfagwyr, Cwm-hwnt, Cwmaman, Cwmbâch, Cwmdare, Cwmpennar, Ferndale, Gadlys, Gellideg, Georgetown, Glebeland, Glenboi, Godreaman, Gurnos, Heolgerrig, Hirwaun, Llwydcoed, Llwyn-on Village, Maerdy, Merthyr Tydfil / Merthyr Tudful, Morgan Town, Pen-y-Darren, Pen-yr-englyn, Penderyn, Penyard, Penyrheol, Rhigos, Rhyd-y-car, Robertstown, The Quar, Thomas Town, Tre-Gibbon, Tre-Ifor, Trecynon, Trefechan, Treherbert, Treorchy / Treorci, Twyn Bryn-hîr, Twynyrodyn, Tydfil's well, Tynewydd, Upper Abercanaid, Williamstown, Winch Fawr, Ynys-fach, Ynyswen, Ysgubor Newydd