| Nombre | Lugar | Código postal |
|---|---|---|
| Waterloo Port, Caernarfon | Caernarfon | LL55 1LP |
| Waterloo Port Road, Caernarfon | Caernarfon | LL55 1LW |
| Wellington Terrace, Caernarfon | Caernarfon | LL55 2HH |
| Wesley Street, Caernarfon | Caernarfon | LL55 2PQ |
| William Street, Caernarfon | Caernarfon | LL55 1ND |
| Y Glyn, Caernarfon | Caernarfon | LL55 1HD |
| Y Glyn, Caernarfon | Caernarfon | LL55 1HG |
| Y Glyn, Caernarfon | Caernarfon | LL55 1HL |
| Y Glyn, Caernarfon | Caernarfon | LL55 1HF |
| Y Glyn, Caernarfon | Caernarfon | LL55 1HE |
| Yr Hwylfa, Caernarfon | Caernarfon | LL55 1HT |