Home Postcode finder QLD Flinton Flinton postcode QLD Flinton is a locality in Queensland covered by postcode 4422. Postcode 4422 State or territory Queensland (QLD) Region Toowoomba Region Add a free Flinton business listing Be the first listing in Flinton Common questionsWhat is the postcode for Flinton?Flinton, QLD has the postcode 4422.What state is Flinton in?Flinton is in Queensland (QLD).Does postcode 4422 cover more than one suburb?Yes. Postcode 4422 covers 5 localities, so the postcode alone does not identify Flinton. Browse other postcodes in Queensland, or widen the search to every Australian postcode.