Aberarth is a village in Ceredigion, Wales.
It is situated within the SA46 postcode district, which is within the Aberaeron post town.
The full list of postcode districts within the Aberaeron post town is as follows:
The Aberaeron post town is within the Swansea postcode area.
Administrative Ward: Llansantffraed
Administrative District: Ceredigion
Country: Wales
UK Parliament: Ceredigion