- Category: Populated Place
- Type: Other Settlement
- Latitude/Longitude: 53°18'21"N 3°14'22"W
- Eastings/Northings: 317500, 379500
- OS Grid: SJ175795
- Mapcode Local: GBR 5ZT6.GL
- Mapcode Global: WH76K.65MD
Location and coordinates are for the approximate centre of Llannerch-y-m within this administrative area.
Geographic features and populated places may cross administrative borders.