- Category: Water Feature
- Type: Island
- Latitude/Longitude: 60°5'50"N 1°13'14"W
- Eastings/Northings: 443439, 1135020
- OS Grid: HU434350
- Mapcode Local: GBR R2B1.P8Y
- Mapcode Global: XHD3K.JG2G
Location and coordinates are for the approximate centre of Couster Skerry within this administrative area.
Geographic features and populated places may cross administrative borders.