Home Postcode finder QLD Biddaddaba Biddaddaba postcode QLD Biddaddaba is a locality in Queensland covered by postcode 4275. Postcode 4275 State or territory Queensland (QLD) Region Gold Coast Add a free Biddaddaba business listing Be the first listing in Biddaddaba Common questionsWhat is the postcode for Biddaddaba?Biddaddaba, QLD has the postcode 4275.What state is Biddaddaba in?Biddaddaba is in Queensland (QLD).Does postcode 4275 cover more than one suburb?Yes. Postcode 4275 covers 11 localities, so the postcode alone does not identify Biddaddaba. Browse other postcodes in Queensland, or widen the search to every Australian postcode.