Every address in Conwy County Borough has an LL postcode, part of the Llandudno postcode area that covers most of North Wales. The county is covered by around fifteen postcode districts. Ten of them sit entirely inside Conwy County, while a few around the edges are shared with Denbighshire, Flintshire or Gwynedd.
The table below shows each district, the post town Royal Mail uses for it and the main towns and villages it covers within Conwy County.
Postcode districts in Conwy County
| Postcode | Post town | Main places in Conwy County | Also covers |
|---|---|---|---|
| LL16 | Denbigh | Llansannan, Bylchau, Llannefydd and nearby rural areas | Most of the district is in Denbighshire, including Denbigh |
| LL17 | St Asaph | A small rural fringe near Llannefydd | Mostly Denbighshire, including St Asaph |
| LL18 | Rhyl | Kinmel Bay | Denbighshire (Rhyl, Rhuddlan, Bodelwyddan) and part of Flintshire |
| LL21 | Corwen | Cerrigydrudion, Llangwm, Llanfihangel Glyn Myfyr, Maerdy, Ty-nant | Mostly Denbighshire (Corwen and the Edeyrnion villages), with a small part in Gwynedd |
| LL22 | Abergele | Abergele, Pensarn, Towyn, Llanddulas, Rhyd-y-foel, Betws yn Rhos, Llanfair Talhaiarn, Llangernyw, Gwytherin, Pandy Tudur | A small edge in Denbighshire |
| LL24 | Betws-y-Coed | Betws-y-Coed, Capel Curig, Penmachno, Cwm Penmachno, Pentrefoelas, Ysbyty Ifan | Conwy County only |
| LL25 | Dolwyddelan | Dolwyddelan and the Lledr valley | Conwy County only |
| LL26 | Llanrwst | Llanrwst, Llanddoged, Maenan, Capel Garmon, Nebo | Conwy County only |
| LL27 | Trefriw | Trefriw | Conwy County only |
| LL28 | Colwyn Bay | Rhos-on-Sea, Mochdre, Glan Conwy, Eglwysbach, Tal-y-cafn | Conwy County only |
| LL29 | Colwyn Bay | Colwyn Bay, Old Colwyn, Llysfaen, Llanelian-yn-Rhos | Conwy County only |
| LL30 | Llandudno | Llandudno, Craig-y-Don, Penrhyn Bay, the Great Orme | Conwy County only |
| LL31 | Llandudno Junction | Llandudno Junction, Deganwy, Glanwydden | Conwy County only |
| LL32 | Conwy | Conwy, Henryd, Rowen, Ty’n-y-groes, Tal-y-bont, Dolgarrog | Conwy County only |
| LL33 | Llanfairfechan | Llanfairfechan | Also Abergwyngregyn in Gwynedd |
| LL34 | Penmaenmawr | Penmaenmawr, Dwygyfylchi, Capelulo | Conwy County only |
Useful things to know
- Two Colwyn Bay districts. LL28 covers the western side, including Rhos-on-Sea and Mochdre, while LL29 covers the town centre, Old Colwyn and Llysfaen.
- Deganwy addresses. Deganwy shares the LL31 district with Llandudno Junction, but many Deganwy addresses use Conwy as the post town.
- Kinmel Bay and Towyn. These neighbouring places are in the same community but different postcode districts. Kinmel Bay is LL18 (Rhyl) and Towyn is LL22 (Abergele).
- Post town is not the same as council area. Some Conwy County addresses carry a Denbigh, St Asaph, Rhyl or Corwen post town even though the council is Conwy County Borough Council. If you need to check which council covers an address, use the postcode checker on the Conwy County Borough Council or GOV.UK websites.
To find the full postcode for a specific address, use the Royal Mail postcode finder.