Home Postcodes by state NSW 2584 Postcode 2584 2584 is the postcode for Binalong, NSW. Localities with postcode 2584BinalongNSW Postcode 2584 State or territory New South Wales (NSW) Localities 1 Council area Yass Valley Council area based on Australian Bureau of Statistics data (ASGS Edition 3), CC BY 4.0. Postcode 2583 · Postcode 2585