Home Postcode finder QLD Watalgan Watalgan postcode QLD Watalgan is a locality in Queensland covered by postcode 4670. Postcode 4670 State or territory Queensland (QLD) Region Sunshine Coast Add a free Watalgan business listing Be the first listing in Watalgan Common questionsWhat is the postcode for Watalgan?Watalgan, QLD has the postcode 4670.What state is Watalgan in?Watalgan 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 Watalgan. Browse other postcodes in Queensland, or widen the search to every Australian postcode.