Map
General Information
| Postal Area | Gwynedd |
| Postcode | LL11 1SY |
| User Type | Large (more than 25 items of mail per day) |
| Region | — |
| Country | Wales |
| Local authority | Wrexham |
| Introduction Date | 1980-01-01 |
| Termination Date | 2007-01-01 |
Geographic Information
| Latitude | 53.0457840 |
| Longitude | -2.9955380 |
| Easting | 333356 |
| Northing | 350299 |
| Quality | Within the building of the matched address closest to the postcode mean |