- Category: Populated Place
- Type: Hamlet
- Latitude/Longitude: 50°9'56"N 5°10'25"W
- Eastings/Northings: 173445, 34333
- OS Grid: SW734343
- Mapcode Local: GBR Z7.HL2S
- Mapcode Global: FRA 081L.47L
Location and coordinates are for the approximate centre of Herniss within this administrative area.
Geographic features and populated places may cross administrative borders.