Home Postcode finder QLD Mount Ossa Mount Ossa postcode QLD Mount Ossa is a locality in Queensland covered by postcode 4741. Postcode 4741 State or territory Queensland (QLD) Region Central QLD Add a free Mount Ossa business listing Be the first listing in Mount Ossa Common questionsWhat is the postcode for Mount Ossa?Mount Ossa, QLD has the postcode 4741.What state is Mount Ossa in?Mount Ossa is in Queensland (QLD).Does postcode 4741 cover more than one suburb?Yes. Postcode 4741 covers 24 localities, so the postcode alone does not identify Mount Ossa. Browse other postcodes in Queensland, or widen the search to every Australian postcode.