Home Postcode finder QLD Wondalli Wondalli postcode QLD Wondalli is a locality in Queensland covered by postcode 4390. Postcode 4390 State or territory Queensland (QLD) Region Toowoomba Region Add a free Wondalli business listing Be the first listing in Wondalli Common questionsWhat is the postcode for Wondalli?Wondalli, QLD has the postcode 4390.What state is Wondalli in?Wondalli is in Queensland (QLD).Does postcode 4390 cover more than one suburb?Yes. Postcode 4390 covers 10 localities, so the postcode alone does not identify Wondalli. Browse other postcodes in Queensland, or widen the search to every Australian postcode.