Dwyriw is a village in Powys, Wales.
It is situated within the SY21 postcode district, which is within the Welshpool post town.
SY21 is the only postcode district within the Welshpool post town.
The Welshpool post town is within the Shrewsbury postcode area.
Administrative Ward: Rhiwcynon
Administrative District: Powys
Country: Wales
UK Parliament: Montgomeryshire