- Category: Populated Place
- Type: Hamlet
- Latitude/Longitude: 51°48'49"N 3°56'13"W
- Eastings/Northings: 266566, 214565
- OS Grid: SN665145
- Mapcode Local: GBR DY.WXS1
- Mapcode Global: VH4JB.PNZX
Location and coordinates are for the approximate centre of Twynmynydd within this administrative area.
Geographic features and populated places may cross administrative borders.