- Category: Populated Place
- Type: Suburban Area
- Latitude/Longitude: 51°37'27"N 3°0'32"W
- Eastings/Northings: 330249, 192214
- OS Grid: ST302922
- Mapcode Local: GBR J5.8V4F
- Mapcode Global: VH7B5.SFML
Location and coordinates are for the approximate centre of Croes-y-mwyalch within this administrative area.
Geographic features and populated places may cross administrative borders.