- Category: Populated Place
- Type: Village
- Latitude/Longitude: 50°24'15"N 4°56'26"W
- Eastings/Northings: 191128, 60181
- OS Grid: SW911601
- Mapcode Local: GBR ZN.7MFD
- Mapcode Global: FRA 07JZ.JYY
Location and coordinates are for the approximate centre of Trevarren within this administrative area.
Geographic features and populated places may cross administrative borders.