 Under the Local Government (Wales) Act 1994 the Rhondda Cynon Taf County Borough Council was established in 1996 and included the Cymmer electoral ward.The population of this ward at the 2011 Census was 5,505.Cymmer Independent Chapel, said to be the first nonconformist chapel in the Rhondda, dates from 1743 and had connections to the revivalist Howel Harris.