Home Postcode finder QLD Mount Tyson Mount Tyson postcode QLD Mount Tyson is a locality in Queensland covered by postcode 4356. Postcode 4356 State or territory Queensland (QLD) Region Toowoomba Region Add a free Mount Tyson business listing Be the first listing in Mount Tyson Common questionsWhat is the postcode for Mount Tyson?Mount Tyson, QLD has the postcode 4356.What state is Mount Tyson in?Mount Tyson is in Queensland (QLD).Does postcode 4356 cover more than one suburb?Yes. Postcode 4356 covers 18 localities, so the postcode alone does not identify Mount Tyson. Browse other postcodes in Queensland, or widen the search to every Australian postcode.