Home Postcode finder QLD Thornville Thornville postcode QLD Thornville is a locality in Queensland covered by postcode 4352. Postcode 4352 State or territory Queensland (QLD) Region Toowoomba Region Add a free Thornville business listing Be the first listing in Thornville Common questionsWhat is the postcode for Thornville?Thornville, QLD has the postcode 4352.What state is Thornville in?Thornville is in Queensland (QLD).Does postcode 4352 cover more than one suburb?Yes. Postcode 4352 covers 71 localities, so the postcode alone does not identify Thornville. Browse other postcodes in Queensland, or widen the search to every Australian postcode.