Home Postcodes by state NSW 2156 Postcode 2156 2156 is the postcode for 3 localities in NSW: Annangrove, Glenhaven and Kenthurst. Localities with postcode 2156AnnangroveNSWGlenhavenNSWKenthurstNSW Postcode 2156 State or territory New South Wales (NSW) Localities 3 Council area The Hills Council area based on Australian Bureau of Statistics data (ASGS Edition 3), CC BY 4.0. Postcode 2155 · Postcode 2157