- Category: Populated Place
- Type: Village
- Latitude/Longitude: 51°56'41"N 4°30'3"W
- Eastings/Northings: 228211, 230326
- OS Grid: SN282303
- Mapcode Local: GBR D6.MN82
- Mapcode Global: VH2NJ.XCYZ
Location and coordinates are for the approximate centre of Trelech within this administrative area.
Geographic features and populated places may cross administrative borders.