Home Postcode finder QLD Koombooloomba Koombooloomba postcode QLD Koombooloomba is a locality in Queensland covered by postcode 4872. Postcode 4872 State or territory Queensland (QLD) Region North QLD Add a free Koombooloomba business listing Be the first listing in Koombooloomba Common questionsWhat is the postcode for Koombooloomba?Koombooloomba, QLD has the postcode 4872.What state is Koombooloomba in?Koombooloomba is in Queensland (QLD).Does postcode 4872 cover more than one suburb?Yes. Postcode 4872 covers 21 localities, so the postcode alone does not identify Koombooloomba. Browse other postcodes in Queensland, or widen the search to every Australian postcode.