Home Postcodes by state NSW 2678 Postcode 2678 2678 is the postcode for 2 localities in NSW: Charles Sturt University and Riverina Msc. Localities with postcode 2678Charles Sturt UniversityNSWRiverina MscNSW Postcode 2678 State or territory New South Wales (NSW) Localities 2 Council area Wagga Wagga Council area based on Australian Bureau of Statistics data (ASGS Edition 3), CC BY 4.0. Postcode 2675 · Postcode 2680