Hengoed is a village on the west side of the Rhymney Valley - in between Ystrad Mynach to the south and also Cefn Hengoed to the north. Across the valley it looks towards Maesycwmmer. The town is in the county district of Caerphilly, in the traditional area of Glamorgan, Wales. The name actually suggests 'old timber' in the Welsh language. The electoral ward of Hengoed includes the villages of Hengoed and also Cefn Hengoed and a part of Tir-y-Berth in the north west. The ward population was recorded at 5,548 in the 2011 census, an increase of 10% over the previous ten years (2001 = 5,046), due partly to several new-build housing developments in the ward in between 2001 and 2011.