Home Postcode finder NSW Mount Lewis Mount Lewis postcode NSW Mount Lewis is a locality in New South Wales covered by postcode 2200. Postcode 2200 State or territory New South Wales (NSW) Region Leightonfield Add a free Mount Lewis business listing Be the first listing in Mount Lewis Common questionsWhat is the postcode for Mount Lewis?Mount Lewis, NSW has the postcode 2200.What state is Mount Lewis in?Mount Lewis is in New South Wales (NSW).Does postcode 2200 cover more than one suburb?Yes. Postcode 2200 covers 7 localities, so the postcode alone does not identify Mount Lewis. Browse other postcodes in New South Wales, or widen the search to every Australian postcode.