- Category: Populated Place
- Type: Suburban Area
- Latitude/Longitude: 51°40'43"N 3°13'37"W
- Eastings/Northings: 315260, 198474
- OS Grid: ST152984
- Mapcode Local: GBR HW.5F0C
- Mapcode Global: VH6DF.02WH
Location and coordinates are for the approximate centre of Gilfach within this administrative area.
Geographic features and populated places may cross administrative borders.