Home Postcode finder QLD Malu Malu postcode QLD Malu is a locality in Queensland covered by postcode 4403. Postcode 4403 State or territory Queensland (QLD) Region Toowoomba Region Add a free Malu business listing Be the first listing in Malu Common questionsWhat is the postcode for Malu?Malu, QLD has the postcode 4403.What state is Malu in?Malu is in Queensland (QLD).Does postcode 4403 cover more than one suburb?Yes. Postcode 4403 covers 6 localities, so the postcode alone does not identify Malu. Browse other postcodes in Queensland, or widen the search to every Australian postcode.