Home Postcode finder QLD Placid Hills Placid Hills postcode QLD Placid Hills is a locality in Queensland covered by postcode 4343. Postcode 4343 State or territory Queensland (QLD) Region Western Suburbs Add a free Placid Hills business listing Be the first listing in Placid Hills Common questionsWhat is the postcode for Placid Hills?Placid Hills, QLD has the postcode 4343.What state is Placid Hills in?Placid Hills is in Queensland (QLD).Does postcode 4343 cover more than one suburb?Yes. Postcode 4343 covers 24 localities, so the postcode alone does not identify Placid Hills. Browse other postcodes in Queensland, or widen the search to every Australian postcode.