Home Postcode finder NSW Walla Walla Walla Walla postcode NSW Walla Walla is a locality in New South Wales covered by postcode 2659. Postcode 2659 State or territory New South Wales (NSW) Region Canberra Add a free Walla Walla business listing More business listings in Walla Walla Businesses in Walla WallaSt Paul's CollegeKlemke Ave · 02 69292105Walla Walla Public SchoolCommercial St · 02 60292253 Common questionsWhat is the postcode for Walla Walla?Walla Walla, NSW has the postcode 2659.What state is Walla Walla in?Walla Walla is in New South Wales (NSW).Does postcode 2659 cover more than one suburb?Yes. Postcode 2659 covers 2 localities, so the postcode alone does not identify Walla Walla. Browse other postcodes in New South Wales, or widen the search to every Australian postcode.