Home Postcode finder QLD Nicholson Nicholson postcode QLD Nicholson is a locality in Queensland covered by postcode 4830. Postcode 4830 State or territory Queensland (QLD) Region North QLD Add a free Nicholson business listing Be the first listing in Nicholson Common questionsWhat is the postcode for Nicholson?Nicholson, QLD has the postcode 4830.What state is Nicholson in?Nicholson is in Queensland (QLD).Does postcode 4830 cover more than one suburb?Yes. Postcode 4830 covers 5 localities, so the postcode alone does not identify Nicholson. Browse other postcodes in Queensland, or widen the search to every Australian postcode.