- Category: Populated Place
- Type: Hamlet
- Latitude/Longitude: 52°51'48"N 4°35'39"W
- Eastings/Northings: 225455, 332699
- OS Grid: SH254326
- Mapcode Local: GBR 53.RLFL
- Mapcode Global: WH44M.D9G6
Location and coordinates are for the approximate centre of Trefaes within this administrative area.
Geographic features and populated places may cross administrative borders.