Home Postcodes by state QLD 4403 Postcode 4403 4403 is the postcode for 6 localities in QLD: Brymaroo, Jondaryan, Malu, Mount Moriah, Quinalow and West Prairie. Localities with postcode 4403BrymarooQLDJondaryanQLDMaluQLDMount MoriahQLDQuinalowQLDWest PrairieQLD Postcode 4403 State or territory Queensland (QLD) Localities 6 Council area Toowoomba Council area based on Australian Bureau of Statistics data (ASGS Edition 3), CC BY 4.0. Postcode 4402 · Postcode 4404