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