Home Postcode finder QLD Cockatoo Cockatoo postcode QLD Cockatoo is a locality in Queensland covered by postcode 4419. Postcode 4419 State or territory Queensland (QLD) Region Toowoomba Region Add a free Cockatoo business listing Be the first listing in Cockatoo Common questionsWhat is the postcode for Cockatoo?Cockatoo, QLD has the postcode 4419.What state is Cockatoo in?Cockatoo is in Queensland (QLD).Does postcode 4419 cover more than one suburb?Yes. Postcode 4419 covers 3 localities, so the postcode alone does not identify Cockatoo. Browse other postcodes in Queensland, or widen the search to every Australian postcode.