- Category: Populated Place
- Type: Hamlet
- Latitude/Longitude: 51°45'52"N 4°29'26"W
- Eastings/Northings: 228226, 210252
- OS Grid: SN282102
- Mapcode Local: GBR GK.F5HJ
- Mapcode Global: VH3LS.3XV6
Location and coordinates are for the approximate centre of Llansadwrnen within this administrative area.
Geographic features and populated places may cross administrative borders.