Home Postcode finder NSW Maxwell Maxwell postcode NSW Maxwell is a locality in New South Wales covered by postcode 2650. Postcode 2650 State or territory New South Wales (NSW) Region Canberra Add a free Maxwell business listing Be the first listing in Maxwell Common questionsWhat is the postcode for Maxwell?Maxwell, NSW has the postcode 2650.What state is Maxwell in?Maxwell is in New South Wales (NSW).Does postcode 2650 cover more than one suburb?Yes. Postcode 2650 covers 52 localities, so the postcode alone does not identify Maxwell. Browse other postcodes in New South Wales, or widen the search to every Australian postcode.