The LL57 4YT postcode was located in Gwynedd, Gwynedd postcode town, within Wales, Wales region.
It is now a terminated postcode, it was a Small User postcode introduced in 1980-01 and terminated on 1998-12.
| Name | Type |
|---|---|
| OA21CD | W00000597 |
| LSOA21CD | W01000115 |
| MSOA21CD | W02000012 |
| MSOA21 | Bethesda |
| Postcode Area | LL57 |
| Ward | Tre-garth a Mynydd Llandygái |
| LTLA22 | Gwynedd |
| UTLA22 | Gwynedd |
| Region | Wales |
| Country | Wales |
| Co-ordinates | [ -4.073793856307905, 53.175305653596396 ] |