Aber-giar is a village in Carmarthenshire, Wales.
It is situated within the SA40 postcode district, which is within the Llanybydder post town.
SA40 is the only postcode district within the Llanybydder post town.
The Llanybydder post town is within the Swansea postcode area.
Administrative Ward: Llanfihangel-ar-Arth
Administrative District: Carmarthenshire
Country: Wales
UK Parliament: Carmarthen East and Dinefwr