Home Postcode finder QLD Walloon Walloon postcode QLD Walloon is a locality in Queensland covered by postcode 4306. Postcode 4306 State or territory Queensland (QLD) Region Western Suburbs Add a free Walloon business listing More business listings in Walloon Businesses in WalloonIpswich Hot Water76 Rackley Rd · 431478631Walloon Dental Surgery2/11 Queen Street, Walloon QLD, Australia · (07) 3067 7990Walloon State SchoolKarrabin-Rosewood Rd · 07 54618333 Common questionsWhat is the postcode for Walloon?Walloon, QLD has the postcode 4306.What state is Walloon in?Walloon is in Queensland (QLD).Does postcode 4306 cover more than one suburb?Yes. Postcode 4306 covers 56 localities, so the postcode alone does not identify Walloon. Browse other postcodes in Queensland, or widen the search to every Australian postcode.