Home Postcode finder QLD Weengallon Weengallon postcode QLD Weengallon is a locality in Queensland covered by postcode 4497. Postcode 4497 State or territory Queensland (QLD) Region Toowoomba Region Add a free Weengallon business listing Be the first listing in Weengallon Common questionsWhat is the postcode for Weengallon?Weengallon, QLD has the postcode 4497.What state is Weengallon in?Weengallon is in Queensland (QLD).Does postcode 4497 cover more than one suburb?Yes. Postcode 4497 covers 3 localities, so the postcode alone does not identify Weengallon. Browse other postcodes in Queensland, or widen the search to every Australian postcode.