- Category: Water Feature
- Type: Island
- Latitude/Longitude: 60°20'46"N 1°24'56"W
- Eastings/Northings: 432350, 1162610
- OS Grid: HU323626
- Mapcode Local: GBR Q1VD.B0H
- Mapcode Global: XHD29.Y6WS
Location and coordinates are for the approximate centre of Grassy Stacks within this administrative area.
Geographic features and populated places may cross administrative borders.