Home Postcode finder NSW Littleton Littleton postcode NSW Littleton is a locality in New South Wales covered by postcode 2790. Postcode 2790 State or territory New South Wales (NSW) Region NSW Country West Add a free Littleton business listing Be the first listing in Littleton Common questionsWhat is the postcode for Littleton?Littleton, NSW has the postcode 2790.What state is Littleton in?Littleton is in New South Wales (NSW).Does postcode 2790 cover more than one suburb?Yes. Postcode 2790 covers 40 localities, so the postcode alone does not identify Littleton. Browse other postcodes in New South Wales, or widen the search to every Australian postcode.