Home Postcode finder QLD Glenrock Glenrock postcode QLD Glenrock is a locality in Queensland covered by postcode 4605. Postcode 4605 State or territory Queensland (QLD) Region Toowoomba Region Add a free Glenrock business listing Be the first listing in Glenrock Common questionsWhat is the postcode for Glenrock?Glenrock, QLD has the postcode 4605.What state is Glenrock in?Glenrock is in Queensland (QLD).Does postcode 4605 cover more than one suburb?Yes. Postcode 4605 covers 21 localities, so the postcode alone does not identify Glenrock. Browse other postcodes in Queensland, or widen the search to every Australian postcode.