Rhondda , or the Rhondda Valley ( ), is a former coal mining valley in Wales, formerly a local government district, consisting of 16 communities built around the River Rhondda. The valley is made up of two valleys, the larger Rhondda Fawr valley (mawr large) and the smaller Rhondda Fach valley (bach small). Both the singular term 'Rhondda Valley' and the plural 'Rhondda Valleys' are commonly used. In 2001 the Rhondda constituency of the National Assembly for Wales had a population of 72,443; while the National Office of Statistics described the Rhondda urban area as having a population of 59,602. Rhondda is part of Rhondda Cynon Taf County Borough and is part of the South Wales Valleys.