- Category: Populated Place
- Type: Other Settlement
- Latitude/Longitude: 51°46'10"N 3°9'12"W
- Eastings/Northings: 320500, 208500
- OS Grid: SO205085
- Mapcode Local: GBR F0.ZLDT
- Mapcode Global: VH6CW.9S7C
Location and coordinates are for the approximate centre of Cwm-celyn within this administrative area.
Geographic features and populated places may cross administrative borders.