Home Postcode finder QLD Coalfalls Coalfalls postcode QLD Coalfalls is a locality in Queensland covered by postcode 4305. Postcode 4305 State or territory Queensland (QLD) Region Western Suburbs Add a free Coalfalls business listing Be the first listing in Coalfalls Common questionsWhat is the postcode for Coalfalls?Coalfalls, QLD has the postcode 4305.What state is Coalfalls in?Coalfalls is in Queensland (QLD).Does postcode 4305 cover more than one suburb?Yes. Postcode 4305 covers 23 localities, so the postcode alone does not identify Coalfalls. Browse other postcodes in Queensland, or widen the search to every Australian postcode.