Home Postcodes by state NSW 2399 Postcode 2399 2399 is the postcode for 2 localities in NSW: Biniguy and Pallamallawa. Localities with postcode 2399BiniguyNSWPallamallawaNSW Postcode 2399 State or territory New South Wales (NSW) Localities 2 Council area Moree Plains Council area based on Australian Bureau of Statistics data (ASGS Edition 3), CC BY 4.0. Postcode 2398 · Postcode 2400