Home Postcodes by state NSW 2101 Postcode 2101 2101 is the postcode for 4 localities in NSW: Elanora Heights, Ingleside, Narrabeen and North Narrabeen. Localities with postcode 2101Elanora HeightsNSWInglesideNSWNarrabeenNSWNorth NarrabeenNSW Postcode 2101 State or territory New South Wales (NSW) Localities 4 Council area Northern Beaches Council area based on Australian Bureau of Statistics data (ASGS Edition 3), CC BY 4.0. Postcode 2100 · Postcode 2102