Home Postcode finder QLD Septimus Septimus postcode QLD Septimus is a locality in Queensland covered by postcode 4754. Postcode 4754 State or territory Queensland (QLD) Region Central QLD Add a free Septimus business listing Be the first listing in Septimus Common questionsWhat is the postcode for Septimus?Septimus, QLD has the postcode 4754.What state is Septimus in?Septimus is in Queensland (QLD).Does postcode 4754 cover more than one suburb?Yes. Postcode 4754 covers 7 localities, so the postcode alone does not identify Septimus. Browse other postcodes in Queensland, or widen the search to every Australian postcode.