Home Postcode finder QLD Mons Mons postcode QLD Mons is a locality in Queensland covered by postcode 4556. Postcode 4556 State or territory Queensland (QLD) Region Sunshine Coast Add a free Mons business listing Be the first listing in Mons Common questionsWhat is the postcode for Mons?Mons, QLD has the postcode 4556.What state is Mons in?Mons is in Queensland (QLD).Does postcode 4556 cover more than one suburb?Yes. Postcode 4556 covers 6 localities, so the postcode alone does not identify Mons. Browse other postcodes in Queensland, or widen the search to every Australian postcode.