Home Postcode finder QLD Mount Barney Mount Barney postcode QLD Mount Barney is a locality in Queensland covered by postcode 4287. Postcode 4287 State or territory Queensland (QLD) Region Heathwood Add a free Mount Barney business listing Be the first listing in Mount Barney Common questionsWhat is the postcode for Mount Barney?Mount Barney, QLD has the postcode 4287.What state is Mount Barney in?Mount Barney is in Queensland (QLD).Does postcode 4287 cover more than one suburb?Yes. Postcode 4287 covers 6 localities, so the postcode alone does not identify Mount Barney. Browse other postcodes in Queensland, or widen the search to every Australian postcode.