- Category: Populated Place
- Type: Suburban Area
- Latitude/Longitude: 51°47'21"N 3°44'34"W
- Eastings/Northings: 279886, 211514
- OS Grid: SN798115
- Mapcode Local: GBR Y6.YJ70
- Mapcode Global: VH5G3.29N3
Location and coordinates are for the approximate centre of Ynys-uchaf within this administrative area.
Geographic features and populated places may cross administrative borders.