Home Postcode finder QLD Biggenden Biggenden postcode QLD Biggenden is a locality in Queensland covered by postcode 4621. Postcode 4621 State or territory Queensland (QLD) Region Sunshine Coast Add a free Biggenden business listing More business listings in Biggenden Businesses in BiggendenBiggenden State SchoolFrederick St · 07 41276333 Common questionsWhat is the postcode for Biggenden?Biggenden, QLD has the postcode 4621.What state is Biggenden in?Biggenden is in Queensland (QLD).Does postcode 4621 cover more than one suburb?Yes. Postcode 4621 covers 11 localities, so the postcode alone does not identify Biggenden. Browse other postcodes in Queensland, or widen the search to every Australian postcode.