Home Postcodes by state NSW 2421 Postcode 2421 2421 is the postcode for 7 localities in NSW: Fishers Hill, Paterson, Summer Hill, Tocal, Torryburn, Vacy and 1 more. Localities with postcode 2421Fishers HillNSWPatersonNSWSummer HillNSWTocalNSWTorryburnNSWVacyNSWWebbers CreekNSW Postcode 2421 State or territory New South Wales (NSW) Localities 7 Council area Dungog; Maitland Council area based on Australian Bureau of Statistics data (ASGS Edition 3), CC BY 4.0. Postcode 2420 · Postcode 2422