88.4% of people in st arnaud were born in australia. of all persons living in st arnaud, 0.9% (19 persons) were aboriginal and/or torres strait islander people. this is higher than for the state of victoria (0.8%) and lower than the national average (2.8%). the most common ancestries in st arnaud were australian 33.0%, english 32.4%, scottish 10.5%, irish 9.5% and german 2.8%.