Home Postcode finder QLD Breddan Breddan postcode QLD Breddan is a locality in Queensland covered by postcode 4820. Postcode 4820 State or territory Queensland (QLD) Region North QLD Add a free Breddan business listing Be the first listing in Breddan Common questionsWhat is the postcode for Breddan?Breddan, QLD has the postcode 4820.What state is Breddan in?Breddan is in Queensland (QLD).Does postcode 4820 cover more than one suburb?Yes. Postcode 4820 covers 21 localities, so the postcode alone does not identify Breddan. Browse other postcodes in Queensland, or widen the search to every Australian postcode.