south-mackay postcode qldga Home ›› Postcode Finder ›› QLDGA ›› South-Mackay South Mackay local listingsThe suburb of South Mackay is located in QLD and has a postcode of 4740. Free south mackay business listing! Get the first free listing in south mackay! Search and find other Postcodes in Queensland or widen the search to Postcodes in Australia.