Home Postcodes by state NSW 2157 Postcode 2157 2157 is the postcode for 3 localities in NSW: Canoelands, Forest Glen and Glenorie. Localities with postcode 2157CanoelandsNSWForest GlenNSWGlenorieNSW Postcode 2157 State or territory New South Wales (NSW) Localities 3 Council area Hornsby; Mainly The Hills, partly Hornsby Council area based on Australian Bureau of Statistics data (ASGS Edition 3), CC BY 4.0. Postcode 2156 · Postcode 2158