Home Postcodes by state NSW 2528 Postcode 2528 2528 is the postcode for 6 localities in NSW: Barrack Heights, Barrack Point, Lake Illawarra, Mount Warrigal, Warilla and Windang. Localities with postcode 2528Barrack HeightsNSWBarrack PointNSWLake IllawarraNSWMount WarrigalNSWWarillaNSWWindangNSW Postcode 2528 State or territory New South Wales (NSW) Localities 6 Council area Shellharbour; Wollongong Council area based on Australian Bureau of Statistics data (ASGS Edition 3), CC BY 4.0. Postcode 2527 · Postcode 2529