Llanychan is a village in Denbighshire, Wales.
It is situated within the LL15 postcode district, which is within the Ruthin post town.
LL15 is the only postcode district within the Ruthin post town.
The Ruthin post town is within the Llandudno postcode area.
Administrative Ward: Llanbedr Dyffryn Clwyd/Llangynhafal
Administrative District: Denbighshire
Country: Wales
UK Parliament: Clwyd West