- Category: Populated Place
- Type: Hamlet
- Latitude/Longitude: 50°20'6"N 4°54'31"W
- Eastings/Northings: 193106, 52402
- OS Grid: SW931524
- Mapcode Local: GBR ZP.PXKZ
- Mapcode Global: FRA 08L4.ZD5
Location and coordinates are for the approximate centre of Trelion within this administrative area.
Geographic features and populated places may cross administrative borders.