Home Postcodes by state QLD 4371 Postcode 4371 4371 is the postcode for 3 localities in QLD: Emu Vale, Swanfels and Yangan. Localities with postcode 4371Emu ValeQLDSwanfelsQLDYanganQLD Postcode 4371 State or territory Queensland (QLD) Localities 3 Council area Southern Downs Council area based on Australian Bureau of Statistics data (ASGS Edition 3), CC BY 4.0. Postcode 4370 · Postcode 4372