Home Postcode finder NSW Little Billabong Little Billabong postcode NSW Little Billabong is a locality in New South Wales covered by postcode 2644. Postcode 2644 State or territory New South Wales (NSW) Region Canberra Add a free Little Billabong business listing Be the first listing in Little Billabong Common questionsWhat is the postcode for Little Billabong?Little Billabong, NSW has the postcode 2644.What state is Little Billabong in?Little Billabong is in New South Wales (NSW).Does postcode 2644 cover more than one suburb?Yes. Postcode 2644 covers 10 localities, so the postcode alone does not identify Little Billabong. Browse other postcodes in New South Wales, or widen the search to every Australian postcode.