Mountain Ash is a community (and also previous community) in the Cynon Valley, within the Region Borough of Rhondda Cynon Taf, Wales. At the 2001 census, Mountain Ash had a population of 7,039 enhancing to 7,374 at the 2011 Census. The Mountain Ash geographical area incorporates and also includes the districts and towns of Cefnpennar, Cwmpennar, Caegarw, Darranlas, Fernhill, Glenboi and Newtown. Mountain Ash exists within the historic region boundaries of Glamorgan. The town lies about 4.5 miles southern of the community of Aberdare and also around 19 miles northwest of Cardiff. The town and also neighborhood of Penrhiwceiber lies around a mile south of Mountain Ash. From a management point of view, Mountain Ash is divided right into two electoral wards: Mountain Ash West considers the community centre, together with the areas of Miskin, Darranlas, Fernhill and also Glenboi; Mountain Ash East consists of the staying areas of Cefnpennar, Cwmpennar, Caegarw and Newtown.