Home Postcode finder QLD Blackbutt Blackbutt postcode QLD Blackbutt is a locality in Queensland covered by postcode 4306. Postcode 4306 State or territory Queensland (QLD) Region Western Suburbs Add a free Blackbutt business listing More business listings in Blackbutt Businesses in BlackbuttBlackbutt State SchoolCrofton St · 07 41702222 Common questionsWhat is the postcode for Blackbutt?Blackbutt, QLD has the postcode 4306.What state is Blackbutt in?Blackbutt is in Queensland (QLD).Does postcode 4306 cover more than one suburb?Yes. Postcode 4306 covers 56 localities, so the postcode alone does not identify Blackbutt. Browse other postcodes in Queensland, or widen the search to every Australian postcode.