blackheath postcode nsw Home ›› Postcode Finder ›› NSW ›› Blackheath Blackheath local listingsThe suburb of Blackheath is located in NSW and has a postcode of 2785. Free blackheath business listing! 1Blue Mountains Christian School60 Thirroul Ave 02 478786452Blackheath Public SchoolLeichhardt St 02 478782533IronClad Plumbing & Property Services9 Seiberi Close, Blackheath NSW, Australia 02 4760 0441 View more business listings in blackheath Search and find other Postcodes in New South Wales or widen the search to Postcodes in Australia.