Home Postcode finder QLD Freestone Freestone postcode QLD Freestone is a locality in Queensland covered by postcode 4370. Postcode 4370 State or territory Queensland (QLD) Region Toowoomba Region Add a free Freestone business listing Be the first listing in Freestone Common questionsWhat is the postcode for Freestone?Freestone, QLD has the postcode 4370.What state is Freestone in?Freestone 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 Freestone. Browse other postcodes in Queensland, or widen the search to every Australian postcode.