- Category: Populated Place
- Type: Suburban Area
- Latitude/Longitude: 52°59'45"N 3°55'59"W
- Eastings/Northings: 270348, 346057
- OS Grid: SH703460
- Mapcode Local: GBR 5Y.HC1K
- Mapcode Global: WH559.KY7H
Location and coordinates are for the approximate centre of Trefeini within this administrative area.
Geographic features and populated places may cross administrative borders.