Home Postcode finder QLD Mullett Creek Mullett Creek postcode QLD Mullett Creek is a locality in Queensland covered by postcode 4670. Postcode 4670 State or territory Queensland (QLD) Region Sunshine Coast Add a free Mullett Creek business listing Be the first listing in Mullett Creek Common questionsWhat is the postcode for Mullett Creek?Mullett Creek, QLD has the postcode 4670.What state is Mullett Creek in?Mullett Creek is in Queensland (QLD).Does postcode 4670 cover more than one suburb?Yes. Postcode 4670 covers 52 localities, so the postcode alone does not identify Mullett Creek. Browse other postcodes in Queensland, or widen the search to every Australian postcode.