Map
General Information
| Postal Area | Gwynedd |
| Postcode | LL77 9ZZ |
| User Type | Large (more than 25 items of mail per day) |
| Region | — |
| Country | Wales |
| Local authority | Isle of Anglesey |
| Introduction Date | 2016-03-01 |
Geographic Information
| Latitude | 53.2530280 |
| Longitude | -4.3098720 |
| Easting | 245996 |
| Northing | 375381 |
| Quality | Imputed by ONS, by reference to surrounding postcode grid references |