- Category: Populated Place
- Type: Hamlet
- Latitude/Longitude: 50°34'13"N 4°45'48"W
- Eastings/Northings: 204410, 78156
- OS Grid: SX044781
- Mapcode Local: GBR N1.FD7W
- Mapcode Global: FRA 07XK.G19
Location and coordinates are for the approximate centre of Trelill within this administrative area.
Geographic features and populated places may cross administrative borders.