- Category: Water Feature
- Type: Island
- Latitude/Longitude: 49°52'22"N 6°24'30"W
- Eastings/Northings: 83360, 6279
- OS Grid: SV833062
- Mapcode Local: GBR BYK0.PDF
- Mapcode Global: VGYC8.VGXC
Location and coordinates are for the approximate centre of Jolly Rock within this administrative area.
Geographic features and populated places may cross administrative borders.