Home Postcode finder QLD Caldervale Caldervale postcode QLD Caldervale is a locality in Queensland covered by postcode 4478. Postcode 4478 State or territory Queensland (QLD) Region Toowoomba Region Add a free Caldervale business listing Be the first listing in Caldervale Common questionsWhat is the postcode for Caldervale?Caldervale, QLD has the postcode 4478.What state is Caldervale in?Caldervale is in Queensland (QLD).Does postcode 4478 cover more than one suburb?Yes. Postcode 4478 covers 10 localities, so the postcode alone does not identify Caldervale. Browse other postcodes in Queensland, or widen the search to every Australian postcode.