- Category: Water Feature
- Type: Island
- Latitude/Longitude: 55°2'6"N 4°13'11"W
- Eastings/Northings: 258223, 573432
- OS Grid: NX582734
- Mapcode Local: GBR 4T.SST8
- Mapcode Global: WH4V9.4PRW
Location and coordinates are for the approximate centre of Holly Island within this administrative area.
Geographic features and populated places may cross administrative borders.