Home Postcode finder QLD South Maclean South Maclean postcode QLD South Maclean is a locality in Queensland covered by postcode 4280. Postcode 4280 State or territory Queensland (QLD) Region Heathwood Add a free South Maclean business listing Be the first listing in South Maclean Common questionsWhat is the postcode for South Maclean?South Maclean, QLD has the postcode 4280.What state is South Maclean in?South Maclean is in Queensland (QLD).Does postcode 4280 cover more than one suburb?Yes. Postcode 4280 covers 4 localities, so the postcode alone does not identify South Maclean. Browse other postcodes in Queensland, or widen the search to every Australian postcode.