| Road Name | Postcode Area | Postcode District | Postcode Sector |
|---|---|---|---|
| PENLLWYN | LL | LL14 | LL14 1 |
| PENLLWYN AVENUE | NP | NP12 | NP12 2 |
| PENLLWYN ESTATE | NP | NP7 | NP7 0 |
| PENLLWYN ESTATE | SY | SY23 | SY23 3 |
| PENLLWYN LANE | CF | CF83 | CF83 8 |
| PENLLWYN LANE | NP | NP12 | NP12 2 |
| PENLLWYN PARK | SA | SA31 | SA31 3 |
| PENLLWYN STREET | NP | NP11 | NP11 7 |