Rhigos is a small village on the saddle of higher ground between the Vale of Neath and the Cynon Valley. It was part of the old Neath Rural district Council under Glamorgan until 1974. The village then came under the jurisdiction of The Cynon Valley Borough which subsequently became Rhondda Cynon Taf, South Wales in 1996. It lies just off the old Aberdare road that was the main link between Aberdare and Glynneath, before the A465 road was extended in the 1960s. The hamlets of Cefn Rhigos and Cwm-Hwnt lie to the west of the main village.

Until 1974, Glamorgan, or sometimes Glamorganshire, was an administrative county in the south of Wales, and later classed as one of the thirteen historic counties of Wales. Originally an early medieval petty kingdom of varying boundaries known in Welsh as Morgannwg, which was then invaded and taken over by the Normans as the Lordship of Glamorgan. The area that became known as Glamorgan was both a rural, pastoral area, and a conflict point between the Norman lords and the Welsh princes. It was defined by a large concentration of castles.