Home Postcodes by state NSW 2040 Postcode 2040 2040 is the postcode for 2 localities in NSW: Leichhardt and Lilyfield. Localities with postcode 2040LeichhardtNSWLilyfieldNSW Postcode 2040 State or territory New South Wales (NSW) Localities 2 Council area Inner West Council area based on Australian Bureau of Statistics data (ASGS Edition 3), CC BY 4.0. Postcode 2039 · Postcode 2041