Home Postcodes by state NSW 2064 Postcode 2064 2064 is the postcode for Artarmon, NSW. Localities with postcode 2064ArtarmonNSW Postcode 2064 State or territory New South Wales (NSW) Localities 1 Council area Willoughby Council area based on Australian Bureau of Statistics data (ASGS Edition 3), CC BY 4.0. Postcode 2063 · Postcode 2065