Abergwesyn is a village in Powys, Wales.
It is situated within the LD5 postcode district, which is within the Llanwrtyd Wells post town.
LD5 is the only postcode district within the Llanwrtyd Wells post town.
The Llanwrtyd Wells post town is within the Llandrindod Wells postcode area.
Administrative Ward: Llanwrtyd Wells
Administrative District: Powys
Country: Wales
UK Parliament: Brecon and Radnorshire