The Mountain Ash East community came into effect on 1 December 2016 following the enactment of The Rhondda Cynon Taf (Communities) Order 2016.[1] It includes the village of Mountain Ash to the east of the River Cynon and also the villages of Newtown, Caegarw, Cwmpennar and Cefnpennar.[2]
According to the 2011 UK Census Mountain Ash East had a population of 2,909.[3]
Mountain Ash East includes the village's Grade II listed St Margaret's Church, designed by John Pollard Seddon.[4]
Since 1995 the ward had been represented on the council by Plaid Cymru councillor, Pauline Jarman,[5][6] who was previously a councillor on Cynon Valley Borough Council. She first stood for election in 1976.[7]
Cllr Jarman had been leader of the Plaid Cymru group on Rhondda Cynon Taff Council since 1996.[7] The Plaid Cymru numbers doubled to 18 after the May 2017 election and were the official opposition on the council.[8]
Following a local government boundary review, the wards of Mountain Ash East and Mountain Ash West were merged to create a new single ward of Mountain Ash, electing two councillors. Pauline Jarman stood for election in the new ward at the 2022 Rhondda Cynon Taf County Borough Council election,[9] though failed to win a seat.