nyngan postcode nswbu Home ›› Postcode Finder ›› NSWBU ›› Nyngan Nyngan local listingsThe suburb of Nyngan is located in NSW and has a postcode of 2825. Free nyngan business listing! 1Nyngan Public School62-82 Cathundril St 02 683216052St Joseph's School23 Terangion St 02 683215883Nyngan High School19-37 Cobar St 02 68321004 View more business listings in nyngan Search and find other Postcodes in New South Wales or widen the search to Postcodes in Australia.