Home Postcode finder NSW Marinna Marinna postcode NSW Marinna is a locality in New South Wales covered by postcode 2663. Postcode 2663 State or territory New South Wales (NSW) Region Canberra Add a free Marinna business listing Be the first listing in Marinna Common questionsWhat is the postcode for Marinna?Marinna, NSW has the postcode 2663.What state is Marinna in?Marinna is in New South Wales (NSW).Does postcode 2663 cover more than one suburb?Yes. Postcode 2663 covers 5 localities, so the postcode alone does not identify Marinna. Browse other postcodes in New South Wales, or widen the search to every Australian postcode.