LL3 — 10 codes dans 43 localités (Royaume-Uni).
| Code postal | Localité / Quartier | Zone administrative | Coordonnées |
|---|---|---|---|
| Gogarth | Conwy · Wales | 53.325, -3.8315 | |
| Llandudno | Conwy · Wales | 53.325, -3.8315 | |
| Llanrhos | Conwy · Wales | 53.325, -3.8315 | |
| Penrhyn-side | Conwy · Wales | 53.325, -3.8315 | |
| Deganwy | Conwy · Wales | 53.3045, -3.8273 | |
| Llandudno Junction | Conwy · Wales | 53.2838, -3.8046 | |
| Ty'n-y-groes | Conwy · Wales | 53.2218, -3.8435 | |
| Tal-y-bont | Conwy · Wales | 53.2218, -3.8435 | |
| Roewen | Conwy · Wales | 53.2218, -3.8435 | |
| Pont Dolgarrog | Conwy · Wales | 53.2218, -3.8435 | |
| Henryd | Conwy · Wales | 53.2218, -3.8435 | |
| Llanbedr-y-cennin | Conwy · Wales | 53.2, -3.8667 | |
| Gyffin | Conwy · Wales | 53.2218, -3.8435 | |
| Dolgarrog | Conwy · Wales | 53.1896, -3.8434 | |
| Conwy | Conwy · Wales | 53.2808, -3.8304 | |
| Caerhun | Conwy · Wales | 53.2167, -3.8333 | |
| Abergwyngregyn | Gwynedd · Wales | 53.2578, -3.9742 | |
| Gorddinog | Gwynedd · Wales | 53.2578, -3.9742 | |
| Llanfairfechan | Conwy · Wales | 53.2578, -3.9742 | |
| Nant y Pandy | Conwy · Wales | 53.2578, -3.9742 | |
| Penmaenmawr | Conwy · Wales | 53.2667, -3.9333 | |
| Dwygyfylchi | Conwy · Wales | 53.2667, -3.9333 | |
| Capelulo | Conwy · Wales | 53.2667, -3.9333 | |
| Aberdyfi | Gwynedd · Wales | 52.5444, -4.0454 | |
| Tywyn | Gwynedd · Wales | 52.5858, -4.0928 | |
| Tonfanau | Gwynedd · Wales | 52.6042, -4.0646 | |
| Tal-y-llyn | Gwynedd · Wales | 52.6042, -4.0646 | |
| Rhyd-yr-onnen | Gwynedd · Wales | 52.6042, -4.0646 | |
| Rhoslefain | Gwynedd · Wales | 52.6042, -4.0646 | |
| Peniarth | Gwynedd · Wales | 52.6042, -4.0646 | |
| Pandy | Gwynedd · Wales | 52.6042, -4.0646 | |
| Llangelynin | Gwynedd · Wales | 52.6042, -4.0646 | |
| Llanfihangel-y-pennant | Gwynedd · Wales | 52.6042, -4.0646 | |
| Llanfendigaid | Gwynedd · Wales | 52.6042, -4.0646 | |
| Llanegryn | Gwynedd · Wales | 52.6287, -4.0715 | |
| Dolgoch | Gwynedd · Wales | 52.6042, -4.0646 | |
| Caethle | Gwynedd · Wales | 52.6042, -4.0646 | |
| Bryncrug | Gwynedd · Wales | 52.6042, -4.0646 | |
| Abergynolwyn | Gwynedd · Wales | 52.6443, -3.9561 | |
| Llwyngwril | Gwynedd · Wales | 52.6677, -4.0842 | |
| Fairbourne | Gwynedd · Wales | 52.6968, -4.0561 | |
| Friog | Gwynedd · Wales | 52.6962, -4.0504 | |
| Arthog | Gwynedd · Wales | 52.7116, -4.0097 |