Home Postcodes by state NSW 2302 Postcode 2302 2302 is the postcode for Newcastle West, NSW. Localities with postcode 2302Newcastle WestNSW Postcode 2302 State or territory New South Wales (NSW) Localities 1 Council area Newcastle Council area based on Australian Bureau of Statistics data (ASGS Edition 3), CC BY 4.0. Postcode 2300 · Postcode 2303