nyngan postcode nswrv Home ›› Postcode Finder ›› NSWRV ›› Nyngan Nyngan local listingsThe suburb of Nyngan is located in NSW and has a postcode of 2825. Free nyngan business listing! 1Nyngan High School19-37 Cobar St 02 683210042Nyngan Public School62-82 Cathundril St 02 683216053St Joseph's School23 Terangion St 02 68321588 View more business listings in nyngan Search and find other Postcodes in New South Wales or widen the search to Postcodes in Australia.