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