Home Postcode finder QLD Rosella Rosella postcode QLD Rosella is a locality in Queensland covered by postcode 4740. Postcode 4740 State or territory Queensland (QLD) Region Central QLD Add a free Rosella business listing Be the first listing in Rosella Common questionsWhat is the postcode for Rosella?Rosella, QLD has the postcode 4740.What state is Rosella in?Rosella is in Queensland (QLD).Does postcode 4740 cover more than one suburb?Yes. Postcode 4740 covers 50 localities, so the postcode alone does not identify Rosella. Browse other postcodes in Queensland, or widen the search to every Australian postcode.