Home Postcodes by state NSW 2645 Postcode 2645 2645 is the postcode for 2 localities in NSW: Cullivel and Urana. Localities with postcode 2645CullivelNSWUranaNSW Postcode 2645 State or territory New South Wales (NSW) Localities 2 Council area Lockhart; Federation Council area based on Australian Bureau of Statistics data (ASGS Edition 3), CC BY 4.0. Postcode 2644 · Postcode 2646