Eglwyswen is a village in Pembrokeshire, Wales.
It is situated within the SA41 postcode district, which is within the Crymych post town.
SA41 is the only postcode district within the Crymych post town.
The Crymych post town is within the Swansea postcode area.
Administrative Ward: Crymych
Administrative District: Pembrokeshire
Country: Wales
UK Parliament: Preseli Pembrokeshire