All postcodes in LL23 7
| Postcode | Place | Type |
|---|---|---|
| LL23 7UW | Y Bala | street |
| LL23 7UY | Y Bala | street |
| LL23 7YA | Y Bala | street |
| LL23 7YB | Y Bala | street |
| LL23 7YD | — | street |
| LL23 7YE | Y Bala | street |
| LL23 7YF | Llanycil | street |
| LL23 7YG | — | street |
| LL23 7YH | — | street |
| LL23 7YL | — | street |
| LL23 7YN | — | street |
| LL23 7YP | Parc | street |
| LL23 7YR | Parc | street |
| LL23 7YS | — | street |
| LL23 7YT | — | street |
| LL23 7YU | — | street |
| LL23 7YW | Parc | street |
| LL23 7YY | Y Bala | street |
| LL23 7YZ | Y Bala | street |
Places in sector LL23 7
- Y Bala 71
- Llanuwchllyn 14
- Llandderfel 12
- Llanfor 4
- Rhos-y-gwaliau 4
- Parc 3
- Cefn-ddwysarn 2
- Frongoch 2
- Sarnau 2
- Bethel 1
- Cwmtirmynach 1
- Llanycil 1
- Llidiardau 1
- Rhiwlas 1
- Rhosdylluan 1
- Rhyd-uchaf 1
- Tre'r-Llan 1