Home Postcodes by state NSW 2102 Postcode 2102 2102 is the postcode for 2 localities in NSW: Warriewood and Warriewood Shopping Square. Localities with postcode 2102WarriewoodNSWWarriewood Shopping SquareNSW Postcode 2102 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 2101 · Postcode 2103