Home Postcode finder QLD Barringun Barringun postcode QLD Barringun is a locality in Queensland covered by postcode 4490. Postcode 4490 State or territory Queensland (QLD) Region Toowoomba Region Add a free Barringun business listing Be the first listing in Barringun Common questionsWhat is the postcode for Barringun?Barringun, QLD has the postcode 4490.What state is Barringun in?Barringun is in Queensland (QLD).Does postcode 4490 cover more than one suburb?Yes. Postcode 4490 covers 11 localities, so the postcode alone does not identify Barringun. Browse other postcodes in Queensland, or widen the search to every Australian postcode.