wongarbon postcode nsw Home ›› Postcode Finder ›› NSW ›› Wongarbon Wongarbon local listingsThe suburb of Wongarbon is located in NSW and has a postcode of 2831. Free wongarbon business listing! 1Wongarbon Public School28 Railway St 02 68878242 View more business listings in wongarbon Search and find other Postcodes in New South Wales or widen the search to Postcodes in Australia.