Home Postcode finder NSW Coolongolook Coolongolook postcode NSW Coolongolook is a locality in New South Wales covered by postcode 2423. Postcode 2423 State or territory New South Wales (NSW) Region Hunter Add a free Coolongolook business listing More business listings in Coolongolook Businesses in CoolongolookCoolongolook Public School12621 Pacific Hwy · 02 49977183 Common questionsWhat is the postcode for Coolongolook?Coolongolook, NSW has the postcode 2423.What state is Coolongolook in?Coolongolook is in New South Wales (NSW).Does postcode 2423 cover more than one suburb?Yes. Postcode 2423 covers 20 localities, so the postcode alone does not identify Coolongolook. Browse other postcodes in New South Wales, or widen the search to every Australian postcode.