Home Postcode finder NSW Wallaga Lake Wallaga Lake postcode NSW Wallaga Lake is a locality in New South Wales covered by postcode 2546. Postcode 2546 State or territory New South Wales (NSW) Region NSW Country West Add a free Wallaga Lake business listing Be the first listing in Wallaga Lake Common questionsWhat is the postcode for Wallaga Lake?Wallaga Lake, NSW has the postcode 2546.What state is Wallaga Lake in?Wallaga Lake is in New South Wales (NSW).Does postcode 2546 cover more than one suburb?Yes. Postcode 2546 covers 17 localities, so the postcode alone does not identify Wallaga Lake. Browse other postcodes in New South Wales, or widen the search to every Australian postcode.