- Category: Populated Place
- Type: Hamlet
- Latitude/Longitude: 55°13'16"N 3°11'2"W
- Eastings/Northings: 324772, 592523
- OS Grid: NY247925
- Mapcode Local: GBR 6862.G4
- Mapcode Global: WH6X9.2115
Location and coordinates are for the approximate centre of Castle O'er within this administrative area.
Geographic features and populated places may cross administrative borders.