| LL41 4SL information | |
|---|---|
| Postcode | LL41 4SL |
| Outward code | LL41 |
| Place | Trawsfynydd |
| Name | Place | Postcode |
|---|---|---|
| Bryn Hyfryd, Trawsfynydd | Trawsfynydd | LL41 4SL |
| Bryn Marian, Trawsfynydd | Trawsfynydd | LL41 4SL |
| Dolgam, Trawsfynydd | Trawsfynydd | LL41 4SL |
| Gwndwn, Trawsfynydd | Trawsfynydd | LL41 4SL |
| Uwchlaw'r Ffynnon, Trawsfynydd | Trawsfynydd | LL41 4SL |