Home Postcode finder NSW Wallacia Wallacia postcode NSW Wallacia is a locality in New South Wales covered by postcode 2745. Postcode 2745 State or territory New South Wales (NSW) Region Nepean Add a free Wallacia business listing More business listings in Wallacia Businesses in WallaciaWallacia Public School171 Mulgoa Rd · 02 47738433 Common questionsWhat is the postcode for Wallacia?Wallacia, NSW has the postcode 2745.What state is Wallacia in?Wallacia is in New South Wales (NSW).Does postcode 2745 cover more than one suburb?Yes. Postcode 2745 covers 6 localities, so the postcode alone does not identify Wallacia. Browse other postcodes in New South Wales, or widen the search to every Australian postcode.