Hillbank is a residential suburb of the City of Playford in the northern suburbs of Adelaide, South Australia.

The 2016 Census by the Australian Bureau of Statistics counted 4,610 persons in the suburb of Hillbank on census night. Of these, 2,315 (50.2%) were male and 2,300 (49.8%) were female. The majority of residents 3,303 (72.0%) was born in Australia. 545 (11.9%) were born in England. The median age of Hillbank residents is 38. Children aged 0–14 years made up 18.5% of the population and people aged 65 years and over made up 12.0% of the population.