- Category: Populated Place
- Type: Hamlet
- Latitude/Longitude: 51°52'27"N 5°14'8"W
- Eastings/Northings: 177368, 224485
- OS Grid: SM773244
- Mapcode Local: GBR C7.S00J
- Mapcode Global: VH0TM.64GX
Location and coordinates are for the approximate centre of Trelerw within this administrative area.
Geographic features and populated places may cross administrative borders.