Home Postcode finder QLD Harriet Harriet postcode QLD Harriet is a locality in Queensland covered by postcode 4625. Postcode 4625 State or territory Queensland (QLD) Region Sunshine Coast Add a free Harriet business listing Be the first listing in Harriet Common questionsWhat is the postcode for Harriet?Harriet, QLD has the postcode 4625.What state is Harriet in?Harriet is in Queensland (QLD).Does postcode 4625 cover more than one suburb?Yes. Postcode 4625 covers 34 localities, so the postcode alone does not identify Harriet. Browse other postcodes in Queensland, or widen the search to every Australian postcode.