Llandybie is a village in Carmarthenshire, Wales.
It is situated within the SA18 postcode district, which is within the Ammanford post town.
SA18 is the only postcode district within the Ammanford post town.
The Ammanford post town is within the Swansea postcode area.
Administrative Ward: Llandybie
Administrative District: Carmarthenshire
Country: Wales
UK Parliament: Carmarthen East and Dinefwr