Home Postcode finder QLD Karragarra Island Karragarra Island postcode QLD Karragarra Island is a locality in Queensland covered by postcode 4184. Postcode 4184 State or territory Queensland (QLD) Region South Subs Add a free Karragarra Island business listing Be the first listing in Karragarra Island Common questionsWhat is the postcode for Karragarra Island?Karragarra Island, QLD has the postcode 4184.What state is Karragarra Island in?Karragarra Island is in Queensland (QLD).Does postcode 4184 cover more than one suburb?Yes. Postcode 4184 covers 7 localities, so the postcode alone does not identify Karragarra Island. Browse other postcodes in Queensland, or widen the search to every Australian postcode.