Home Postcode finder NSW Berthong Berthong postcode NSW Berthong is a locality in New South Wales covered by postcode 2594. Postcode 2594 State or territory New South Wales (NSW) Region Canberra Add a free Berthong business listing Be the first listing in Berthong Common questionsWhat is the postcode for Berthong?Berthong, NSW has the postcode 2594.What state is Berthong in?Berthong is in New South Wales (NSW).Does postcode 2594 cover more than one suburb?Yes. Postcode 2594 covers 13 localities, so the postcode alone does not identify Berthong. Browse other postcodes in New South Wales, or widen the search to every Australian postcode.