- Category: Populated Place
- Type: Hamlet
- Latitude/Longitude: 53°3'30"N 3°15'17"W
- Eastings/Northings: 315999, 352002
- OS Grid: SJ159520
- Mapcode Local: GBR 6V.C7W3
- Mapcode Global: WH77P.ZD71
Location and coordinates are for the approximate centre of Pen-llain-wen within this administrative area.
Geographic features and populated places may cross administrative borders.