- Category: Populated Place
- Type: Suburban Area
- Latitude/Longitude: 51°39'0"N 3°11'40"W
- Eastings/Northings: 317440, 195268
- OS Grid: ST174952
- Mapcode Local: GBR HX.793M
- Mapcode Global: VH6DF.KSYD
Location and coordinates are for the approximate centre of Penllwyn within this administrative area.
Geographic features and populated places may cross administrative borders.