- Category: Populated Place
- Type: Hamlet
- Latitude/Longitude: 52°49'44"N 3°14'48"W
- Eastings/Northings: 316100, 326455
- OS Grid: SJ161264
- Mapcode Local: GBR 6V.TXGG
- Mapcode Global: WH78W.346Z
Location and coordinates are for the approximate centre of Efail-rhyd within this administrative area.
Geographic features and populated places may cross administrative borders.