upper-myall postcode nswdl Home ›› Postcode Finder ›› NSWDL ›› Upper-Myall Upper Myall local listingsThe suburb of Upper Myall is located in NSW and has a postcode of 2423. Free upper myall business listing! Get the first free listing in upper myall! Search and find other Postcodes in New South Wales or widen the search to Postcodes in Australia.