- Category: Populated Place
- Type: Other Settlement
- Latitude/Longitude: 53°23'49"N 4°21'18"W
- Eastings/Northings: 243500, 391500
- OS Grid: SH435915
- Mapcode Local: GBR HMMQ.FSN
- Mapcode Global: WH421.2WC3
Location and coordinates are for the approximate centre of Tyddyn Dai within this administrative area.
Geographic features and populated places may cross administrative borders.