- Category: Populated Place
- Type: Village
- Latitude/Longitude: 50°20'52"N 4°47'29"W
- Eastings/Northings: 201500, 53500
- OS Grid: SX015535
- Mapcode Local: GBR ZX.94S3
- Mapcode Global: FRA 08V3.WP5
Location and coordinates are for the approximate centre of Trethowel within this administrative area.
Geographic features and populated places may cross administrative borders.