Home Postcode finder QLD Isla Isla postcode QLD Isla is a locality in Queensland covered by postcode 4719. Postcode 4719 State or territory Queensland (QLD) Region Central QLD Add a free Isla business listing Be the first listing in Isla Common questionsWhat is the postcode for Isla?Isla, QLD has the postcode 4719.What state is Isla in?Isla is in Queensland (QLD).Does postcode 4719 cover more than one suburb?Yes. Postcode 4719 covers 6 localities, so the postcode alone does not identify Isla. Browse other postcodes in Queensland, or widen the search to every Australian postcode.