Llansadwrn is a village in Anglesey, Wales.
It is situated within the LL59 postcode district, which is within the Menai Bridge post town.
LL59 is the only postcode district within the Menai Bridge post town.
The Menai Bridge post town is within the Llandudno postcode area.
Administrative Ward: Cwm Cadnant
Administrative District: Isle of Anglesey
Country: Wales
UK Parliament: Ynys Môn