dungowan postcode nswrv Home ›› Postcode Finder ›› NSWRV ›› Dungowan Dungowan local listingsThe suburb of Dungowan is located in NSW and has a postcode of 2340. Free dungowan business listing! 1Dungowan Public SchoolTamworth Rd 02 67694259 View more business listings in dungowan Search and find other Postcodes in New South Wales or widen the search to Postcodes in Australia.