Home Postcodes by state NSW 2126 Postcode 2126 2126 is the postcode for Cherrybrook, NSW. Localities with postcode 2126CherrybrookNSW Postcode 2126 State or territory New South Wales (NSW) Localities 1 Council area Hornsby Council area based on Australian Bureau of Statistics data (ASGS Edition 3), CC BY 4.0. Postcode 2125 · Postcode 2127