Home Postcode finder QLD Yandarlo Yandarlo postcode QLD Yandarlo is a locality in Queensland covered by postcode 4478. Postcode 4478 State or territory Queensland (QLD) Region Toowoomba Region Add a free Yandarlo business listing Be the first listing in Yandarlo Common questionsWhat is the postcode for Yandarlo?Yandarlo, QLD has the postcode 4478.What state is Yandarlo in?Yandarlo 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 Yandarlo. Browse other postcodes in Queensland, or widen the search to every Australian postcode.