Home Postcode finder QLD Glenaven Glenaven postcode QLD Glenaven is a locality in Queensland covered by postcode 4355. Postcode 4355 State or territory Queensland (QLD) Region Toowoomba Region Add a free Glenaven business listing Be the first listing in Glenaven Common questionsWhat is the postcode for Glenaven?Glenaven, QLD has the postcode 4355.What state is Glenaven in?Glenaven is in Queensland (QLD).Does postcode 4355 cover more than one suburb?Yes. Postcode 4355 covers 12 localities, so the postcode alone does not identify Glenaven. Browse other postcodes in Queensland, or widen the search to every Australian postcode.