Home Postcodes by state NSW 2117 Postcode 2117 2117 is the postcode for 4 localities in NSW: Dundas, Dundas Valley, Oatlands and Telopea. Localities with postcode 2117DundasNSWDundas ValleyNSWOatlandsNSWTelopeaNSW Postcode 2117 State or territory New South Wales (NSW) Localities 4 Council area Parramatta Council area based on Australian Bureau of Statistics data (ASGS Edition 3), CC BY 4.0. Postcode 2116 · Postcode 2118