Home Postcode finder QLD Mount Britton Mount Britton postcode QLD Mount Britton is a locality in Queensland covered by postcode 4742. Postcode 4742 State or territory Queensland (QLD) Region Central QLD Add a free Mount Britton business listing Be the first listing in Mount Britton Common questionsWhat is the postcode for Mount Britton?Mount Britton, QLD has the postcode 4742.What state is Mount Britton in?Mount Britton is in Queensland (QLD).Does postcode 4742 cover more than one suburb?Yes. Postcode 4742 covers 11 localities, so the postcode alone does not identify Mount Britton. Browse other postcodes in Queensland, or widen the search to every Australian postcode.