in the 2016 census, there were 7,375 people in cottesloe. 68.8% of people were born in australia. the most common other countries of birth were england 8.6%, south africa 1.8%, new zealand 1.6% and united states of america 1.4%. 86.6% of people spoke only english at home. the most common responses for religion were no religion 36.4%, anglican 22.6% and catholic 19.3%.