Home Postcode finder QLD East Mackay East Mackay postcode QLD East Mackay is a locality in Queensland covered by postcode 4740. Postcode 4740 State or territory Queensland (QLD) Region Central QLD Add a free East Mackay business listing More business listings in East Mackay Businesses in East MackayCentral Queensland Conveyancing Centre74 Victoria Street · 074-957-2458Climate Air SolutionsBy Phone · 0404 765 863Climate Air SolutionsBy appointment · 0404765863 Common questionsWhat is the postcode for East Mackay?East Mackay, QLD has the postcode 4740.What state is East Mackay in?East Mackay is in Queensland (QLD).Does postcode 4740 cover more than one suburb?Yes. Postcode 4740 covers 50 localities, so the postcode alone does not identify East Mackay. Browse other postcodes in Queensland, or widen the search to every Australian postcode.