Home Postcodes by state NSW 2086 Postcode 2086 2086 is the postcode for 2 localities in NSW: Frenchs Forest and Frenchs Forest East. Localities with postcode 2086Frenchs ForestNSWFrenchs Forest EastNSW Postcode 2086 State or territory New South Wales (NSW) Localities 2 Council area Northern Beaches Council area based on Australian Bureau of Statistics data (ASGS Edition 3), CC BY 4.0. Postcode 2085 · Postcode 2087