Aberaman, Abercanaid, Abercwmboi, Aberdare / Aberdâr, Abermorlais, Abernant, Blaenllechau, Blaenrhondda, Cae-draw, Cae-pant-tywyll, Caegarw, Cefn Rhigos, Cefn-coed-y-cymmer, Cefnpennar, Clwydyfagwyr, Cwm-hwnt, Cwmaman, Cwmbâch, Cwmdare, Cwmpennar, Darranlas, Ferndale, Ffos-y-frân, Gadlys, Galon-Uchaf, Gellideg, Georgetown, Glebeland, Glenboi, Godreaman, Gurnos, Heolgerrig, Hirwaun, Incline Top, Llwyn-on Village, Maerdy, Merthyr Tydfil / Merthyr Tudful, Morgan Town, Morlais Castle, Mountain Ash / Aberpennar, Mountain Hare, Pen-y-Darren, Penderyn, Pentrebach, Penyard, Penyrheol, Penywaun, Rhigos, Rhyd-y-car, Robertstown, The Quar, Thomas Town, Tre-Gibbon, Tre-Ifor, Trecynon, Trefechan, Twyn Bryn-hîr, Twynyrodyn, Tydfil's well, Upper Abercanaid, Williamstown, Winch Fawr, Ynys-fach, Ysgubor Newydd