Home Postcodes by state NSW 2048 Postcode 2048 2048 is the postcode for 2 localities in NSW: Stanmore and Westgate. Localities with postcode 2048StanmoreNSWWestgateNSW Postcode 2048 State or territory New South Wales (NSW) Localities 2 Council area Inner West Council area based on Australian Bureau of Statistics data (ASGS Edition 3), CC BY 4.0. Postcode 2047 · Postcode 2049