Hillside is a suburb of Melbourne, Victoria, Australia, 23 km north-west of Melbourne's Central Business District. Its local government areas are the cities of Brimbank and Melton. At the 2011 Census, Hillside had a population of 16,326. There is another Hillside in Victoria, a small rural district near Bairnsdale. The streets of Hillside are lined with plane trees, which were planted during the farming days of Hillside. The terrain has a slight slope going up the main street.