- Category: Water Feature
- Type: Island
- Latitude/Longitude: 50°21'32"N 4°18'2"W
- Eastings/Northings: 236438, 53542
- OS Grid: SX364535
- Mapcode Local: GBR NN.VR4B
- Mapcode Global: FRA 18W2.VPX
Location and coordinates are for the approximate centre of Hilstor Rock within this administrative area.
Geographic features and populated places may cross administrative borders.