- Category: Populated Place
- Type: Other Settlement
- Latitude/Longitude: 50°34'56"N 4°45'46"W
- Eastings/Northings: 204500, 79500
- OS Grid: SX045795
- Mapcode Local: GBR N1.DLDH
- Mapcode Global: FRA 07XJ.G97
Location and coordinates are for the approximate centre of Trewethen within this administrative area.
Geographic features and populated places may cross administrative borders.