- Category: Populated Place
- Type: Village
- Latitude/Longitude: 50°40'16"N 4°43'25"W
- Eastings/Northings: 207629, 89262
- OS Grid: SX076892
- Mapcode Local: GBR N2.74FG
- Mapcode Global: FRA 07Z9.KGX
Location and coordinates are for the approximate centre of Trethevey within this administrative area.
Geographic features and populated places may cross administrative borders.