Home Postcode finder QLD Silkwood Silkwood postcode QLD Silkwood is a locality in Queensland covered by postcode 4856. Postcode 4856 State or territory Queensland (QLD) Region North QLD Add a free Silkwood business listing More business listings in Silkwood Businesses in SilkwoodSilkwood State SchoolJapoon Rd · 07 40652188St John's Primary School6-12 Harold St · 07 40652193 Common questionsWhat is the postcode for Silkwood?Silkwood, QLD has the postcode 4856.What state is Silkwood in?Silkwood is in Queensland (QLD).Does postcode 4856 cover more than one suburb?Yes. Postcode 4856 covers 7 localities, so the postcode alone does not identify Silkwood. Browse other postcodes in Queensland, or widen the search to every Australian postcode.