Home Postcodes by state NSW 2049 Postcode 2049 2049 is the postcode for 3 localities in NSW: Lewisham, Petersham and Petersham North. Localities with postcode 2049LewishamNSWPetershamNSWPetersham NorthNSW Postcode 2049 State or territory New South Wales (NSW) Localities 3 Council area Inner West Council area based on Australian Bureau of Statistics data (ASGS Edition 3), CC BY 4.0. Postcode 2048 · Postcode 2050