Home Postcode finder NSW Congo Congo postcode NSW Congo is a locality in New South Wales covered by postcode 2537. Postcode 2537 State or territory New South Wales (NSW) Region NSW Country West Add a free Congo business listing Be the first listing in Congo Common questionsWhat is the postcode for Congo?Congo, NSW has the postcode 2537.What state is Congo in?Congo is in New South Wales (NSW).Does postcode 2537 cover more than one suburb?Yes. Postcode 2537 covers 17 localities, so the postcode alone does not identify Congo. Browse other postcodes in New South Wales, or widen the search to every Australian postcode.