helensburgh postcode nswdl Home ›› Postcode Finder ›› NSWDL ›› Helensburgh Helensburgh local listingsThe suburb of Helensburgh is located in NSW and has a postcode of 2508. Free helensburgh business listing! 1Helensburgh Public School1 Lukin St 02 429413322Holy Cross Primary School1 McMillan St 02 429415883Brushed by Brooke LouiseHelensburgh New South Wales 2508, Australia 0434450655 View more business listings in helensburgh Search and find other Postcodes in New South Wales or widen the search to Postcodes in Australia.