- Category: Water Feature
- Type: Island
- Latitude/Longitude: 55°24'5"N 4°46'11"W
- Eastings/Northings: 224708, 615437
- OS Grid: NS247154
- Mapcode Local: GBR 44.1L12
- Mapcode Global: WH2Q0.PHVH
Location and coordinates are for the approximate centre of Mackerel Rock within this administrative area.
Geographic features and populated places may cross administrative borders.