- Category: Populated Place
- Type: Hamlet
- Latitude/Longitude: 53°18'29"N 3°17'27"W
- Eastings/Northings: 314079, 379791
- OS Grid: SJ140797
- Mapcode Local: GBR 5ZG5.9V
- Mapcode Global: WH76J.F33S
Location and coordinates are for the approximate centre of Tre-Mostyn within this administrative area.
Geographic features and populated places may cross administrative borders.