Home Postcodes by state QLD 4390 Postcode 4390 4390 is the postcode for 10 localities in QLD: Billa Billa, Calingunee, Callandoon, Goodar, Goondiwindi, Kindon and 4 more. Localities with postcode 4390Billa BillaQLDCalinguneeQLDCallandoonQLDGoodarQLDGoondiwindiQLDKindonQLDLundavraQLDWondalliQLDWyagaQLDYagaburneQLD Postcode 4390 State or territory Queensland (QLD) Localities 10 Council area Goondiwindi Council area based on Australian Bureau of Statistics data (ASGS Edition 3), CC BY 4.0. Postcode 4388 · Postcode 4400