Home Postcode finder QLD Diglum Diglum postcode QLD Diglum is a locality in Queensland covered by postcode 4680. Postcode 4680 State or territory Queensland (QLD) Region Central QLD Add a free Diglum business listing Be the first listing in Diglum Common questionsWhat is the postcode for Diglum?Diglum, QLD has the postcode 4680.What state is Diglum in?Diglum is in Queensland (QLD).Does postcode 4680 cover more than one suburb?Yes. Postcode 4680 covers 41 localities, so the postcode alone does not identify Diglum. Browse other postcodes in Queensland, or widen the search to every Australian postcode.