Home Postcodes by state NSW 2644 Postcode 2644 2644 is the postcode for 10 localities in NSW: Bowna, Coppabella, Holbrook, Lankeys Creek, Little Billabong, Mountain Creek and 4 more. Localities with postcode 2644BownaNSWCoppabellaNSWHolbrookNSWLankeys CreekNSWLittle BillabongNSWMountain CreekNSWMullengandraNSWWantagongNSWWoomargamaNSWYararaNSW Postcode 2644 State or territory New South Wales (NSW) Localities 10 Council area Greater Hume Council area based on Australian Bureau of Statistics data (ASGS Edition 3), CC BY 4.0. Postcode 2643 · Postcode 2645