Home Postcode finder QLD Ballaroo Ballaroo postcode QLD Ballaroo is a locality in Queensland covered by postcode 4455. Postcode 4455 State or territory Queensland (QLD) Region Toowoomba Region Add a free Ballaroo business listing Be the first listing in Ballaroo Common questionsWhat is the postcode for Ballaroo?Ballaroo, QLD has the postcode 4455.What state is Ballaroo in?Ballaroo is in Queensland (QLD).Does postcode 4455 cover more than one suburb?Yes. Postcode 4455 covers 19 localities, so the postcode alone does not identify Ballaroo. Browse other postcodes in Queensland, or widen the search to every Australian postcode.