Home Postcode finder QLD Gunpowder Gunpowder postcode QLD Gunpowder is a locality in Queensland covered by postcode 4825. Postcode 4825 State or territory Queensland (QLD) Region North QLD Add a free Gunpowder business listing Be the first listing in Gunpowder Common questionsWhat is the postcode for Gunpowder?Gunpowder, QLD has the postcode 4825.What state is Gunpowder in?Gunpowder is in Queensland (QLD).Does postcode 4825 cover more than one suburb?Yes. Postcode 4825 covers 36 localities, so the postcode alone does not identify Gunpowder. It also appears in 2 states or territories, so it does not identify a state either. Browse other postcodes in Queensland, or widen the search to every Australian postcode.