- Category: Populated Place
- Type: Other Settlement
- Latitude/Longitude: 51°41'9"N 4°1'9"W
- Eastings/Northings: 260500, 200500
- OS Grid: SN605005
- Mapcode Local: GBR GW.QXK5
- Mapcode Global: VH4JW.8WZG
Location and coordinates are for the approximate centre of Bach-y-gwreiddyn within this administrative area.
Geographic features and populated places may cross administrative borders.