Home Postcode finder NSW Killawarra Killawarra postcode NSW Killawarra is a locality in New South Wales covered by postcode 2429. Postcode 2429 State or territory New South Wales (NSW) Region Hunter Add a free Killawarra business listing Be the first listing in Killawarra Common questionsWhat is the postcode for Killawarra?Killawarra, NSW has the postcode 2429.What state is Killawarra in?Killawarra is in New South Wales (NSW).Does postcode 2429 cover more than one suburb?Yes. Postcode 2429 covers 32 localities, so the postcode alone does not identify Killawarra. Browse other postcodes in New South Wales, or widen the search to every Australian postcode.