Home Postcode finder QLD Millwood Millwood postcode QLD Millwood is a locality in Queensland covered by postcode 4357. Postcode 4357 State or territory Queensland (QLD) Region Toowoomba Region Add a free Millwood business listing Be the first listing in Millwood Common questionsWhat is the postcode for Millwood?Millwood, QLD has the postcode 4357.What state is Millwood in?Millwood is in Queensland (QLD).Does postcode 4357 cover more than one suburb?Yes. Postcode 4357 covers 26 localities, so the postcode alone does not identify Millwood. Browse other postcodes in Queensland, or widen the search to every Australian postcode.