Glyncorrwg is also the name of an electoral ward and formerly a community covering the village and surrounding countryside, in Neath Port Talbot county borough.

Glyncorrwg is part of the community known as the Afan Valleys, which also contains the villages of Abergwynfi, Blaengwynfi, Croeserw, Cymmer, Abercregan, Duffryn and Glyncorwg itself.

In 1987, he found that age-standardised death rates under 65 were 28% lower in Glyncorrwg than in nearby Blaengwynfi over the previous five-year period.

This approach, which was the subject of many publications, led eventually to the introduction of the Quality and Outcomes Framework, which rewarded general practitioners for meeting targets for intervention in the management of disease.

Glyncorrwg is bounded by the wards of Blaengwrach in the Vale of Neath to the north; Treherbert in the county of Rhondda Cynon Taf to the east; by Gwynfi and Cymmer in the (Afan Valley) to the south; and by Resolven to the west.