Home Postcode finder QLD Hirstglen Hirstglen postcode QLD Hirstglen is a locality in Queensland covered by postcode 4359. Postcode 4359 State or territory Queensland (QLD) Region Toowoomba Region Add a free Hirstglen business listing Be the first listing in Hirstglen Common questionsWhat is the postcode for Hirstglen?Hirstglen, QLD has the postcode 4359.What state is Hirstglen in?Hirstglen is in Queensland (QLD).Does postcode 4359 cover more than one suburb?Yes. Postcode 4359 covers 5 localities, so the postcode alone does not identify Hirstglen. Browse other postcodes in Queensland, or widen the search to every Australian postcode.