Home Postcode finder NSW Brownsville Brownsville postcode NSW Brownsville is a locality in New South Wales covered by postcode 2530. Postcode 2530 State or territory New South Wales (NSW) Region Illawarra Add a free Brownsville business listing Be the first listing in Brownsville Common questionsWhat is the postcode for Brownsville?Brownsville, NSW has the postcode 2530.What state is Brownsville in?Brownsville is in New South Wales (NSW).Does postcode 2530 cover more than one suburb?Yes. Postcode 2530 covers 14 localities, so the postcode alone does not identify Brownsville. Browse other postcodes in New South Wales, or widen the search to every Australian postcode.