Home Postcode finder QLD Fleurbaix Fleurbaix postcode QLD Fleurbaix is a locality in Queensland covered by postcode 4375. Postcode 4375 State or territory Queensland (QLD) Region Toowoomba Region Add a free Fleurbaix business listing Be the first listing in Fleurbaix Common questionsWhat is the postcode for Fleurbaix?Fleurbaix, QLD has the postcode 4375.What state is Fleurbaix in?Fleurbaix is in Queensland (QLD).Does postcode 4375 cover more than one suburb?Yes. Postcode 4375 covers 2 localities, so the postcode alone does not identify Fleurbaix. It also appears in 2 states or territories, so it does not identify a state either. Browse other postcodes in Queensland, or widen the search to every Australian postcode.