lake-hiawatha postcode nswst Home ›› Postcode Finder ›› NSWST ›› Lake-Hiawatha Lake Hiawatha local listingsThe suburb of Lake Hiawatha is located in NSW and has a postcode of 2462. Free lake hiawatha business listing! Get the first free listing in lake hiawatha! Search and find other Postcodes in New South Wales or widen the search to Postcodes in Australia.