The community of Llwydcoed, Rhondda Cynon Taf was, for much of the twentieth century, and electoral ward for the purposes of electing members to Glamorgan County Council and the Aberdare Urban District Council. Llwydcoed is no longer an electoral ward but forms part of Aberdare West/Llwydcoed electoral ward for the purposes of Rhondda Cynon Taf unitary authority elections
Llwydcoed first became an electoral ward in the late nineteenth century with the formation of Glamorgan County Council. Llwydcoed was also an electoral ward of the Aberdare Urban District Council from its formation in 1894.