Map
General Information
| Postal Area | Gwynedd |
| Postcode | LL11 1YL |
| User Type | Large (more than 25 items of mail per day) |
| Region | — |
| Country | Wales |
| Local authority | Wrexham |
| Introduction Date | 1980-01-01 |
| Termination Date | 1995-07-01 |
Geographic Information
| Latitude | 53.0405910 |
| Longitude | -2.9723890 |
| Easting | 334900 |
| Northing | 349700 |
| Quality | Postcode terminated prior to Gridlink® initiative, last known ONS postcode grid reference |