Home Postcodes by state NSW 2707 Postcode 2707 2707 is the postcode for 2 localities in NSW: Argoon and Coleambally. Localities with postcode 2707ArgoonNSWColeamballyNSW Postcode 2707 State or territory New South Wales (NSW) Localities 2 Council area Murrumbidgee Council area based on Australian Bureau of Statistics data (ASGS Edition 3), CC BY 4.0. Postcode 2706 · Postcode 2710