Home Postcode finder QLD Mount Marlow Mount Marlow postcode QLD Mount Marlow is a locality in Queensland covered by postcode 4800. Postcode 4800 State or territory Queensland (QLD) Region Central QLD Add a free Mount Marlow business listing Be the first listing in Mount Marlow Common questionsWhat is the postcode for Mount Marlow?Mount Marlow, QLD has the postcode 4800.What state is Mount Marlow in?Mount Marlow is in Queensland (QLD).Does postcode 4800 cover more than one suburb?Yes. Postcode 4800 covers 38 localities, so the postcode alone does not identify Mount Marlow. Browse other postcodes in Queensland, or widen the search to every Australian postcode.