Home Postcode finder QLD Broughton Broughton postcode QLD Broughton is a locality in Queensland covered by postcode 4820. Postcode 4820 State or territory Queensland (QLD) Region North QLD Add a free Broughton business listing Be the first listing in Broughton Common questionsWhat is the postcode for Broughton?Broughton, QLD has the postcode 4820.What state is Broughton in?Broughton is in Queensland (QLD).Does postcode 4820 cover more than one suburb?Yes. Postcode 4820 covers 21 localities, so the postcode alone does not identify Broughton. Browse other postcodes in Queensland, or widen the search to every Australian postcode.