mount-mellum postcode qldga Home ›› Postcode Finder ›› QLDGA ›› Mount-Mellum Mount Mellum local listingsThe suburb of Mount Mellum is located in QLD and has a postcode of 4550. Free mount mellum business listing! Get the first free listing in mount mellum! Search and find other Postcodes in Queensland or widen the search to Postcodes in Australia.