Home Postcode finder QLD Mackenzie River Mackenzie River postcode QLD Mackenzie River is a locality in Queensland covered by postcode 4705. Postcode 4705 State or territory Queensland (QLD) Region Central QLD Add a free Mackenzie River business listing Be the first listing in Mackenzie River Common questionsWhat is the postcode for Mackenzie River?Mackenzie River, QLD has the postcode 4705.What state is Mackenzie River in?Mackenzie River is in Queensland (QLD).Does postcode 4705 cover more than one suburb?Yes. Postcode 4705 covers 5 localities, so the postcode alone does not identify Mackenzie River. Browse other postcodes in Queensland, or widen the search to every Australian postcode.