Home Postcode finder QLD Silverwood Silverwood postcode QLD Silverwood is a locality in Queensland covered by postcode 4370. Postcode 4370 State or territory Queensland (QLD) Region Toowoomba Region Add a free Silverwood business listing Be the first listing in Silverwood Common questionsWhat is the postcode for Silverwood?Silverwood, QLD has the postcode 4370.What state is Silverwood in?Silverwood is in Queensland (QLD).Does postcode 4370 cover more than one suburb?Yes. Postcode 4370 covers 46 localities, so the postcode alone does not identify Silverwood. Browse other postcodes in Queensland, or widen the search to every Australian postcode.