Home Postcodes by state NSW 2089 Postcode 2089 2089 is the postcode for 3 localities in NSW: Kurraba Point, Neutral Bay and Neutral Bay Junction. Localities with postcode 2089Kurraba PointNSWNeutral BayNSWNeutral Bay JunctionNSW Postcode 2089 State or territory New South Wales (NSW) Localities 3 Council area North Sydney Council area based on Australian Bureau of Statistics data (ASGS Edition 3), CC BY 4.0. Postcode 2088 · Postcode 2090