Home Postcodes by state QLD 4497 Postcode 4497 4497 is the postcode for 3 localities in QLD: Daymar, Thallon and Weengallon. Localities with postcode 4497DaymarQLDThallonQLDWeengallonQLD Postcode 4497 State or territory Queensland (QLD) Localities 3 Council area Goondiwindi; Balonne Council area based on Australian Bureau of Statistics data (ASGS Edition 3), CC BY 4.0. Postcode 4496 · Postcode 4498