gundagai postcode nswrv Home ›› Postcode Finder ›› NSWRV ›› Gundagai Gundagai local listingsThe suburb of Gundagai is located in NSW and has a postcode of 2722. Free gundagai business listing! 1Gundagai High SchoolHanley St 02 694412332Gundagai Public SchoolWilliam St 02 694418113Gundagai South Public SchoolLuke St 02 69441117 View more business listings in gundagai Search and find other Postcodes in New South Wales or widen the search to Postcodes in Australia.