Home Postcodes by state NSW 2021 Postcode 2021 2021 is the postcode for 3 localities in NSW: Centennial Park, Moore Park and Paddington. Localities with postcode 2021Centennial ParkNSWMoore ParkNSWPaddingtonNSW Postcode 2021 State or territory New South Wales (NSW) Localities 3 Council area Sydney; Mainly Woollahra, partly Sydney Council area based on Australian Bureau of Statistics data (ASGS Edition 3), CC BY 4.0. Postcode 2020 · Postcode 2022