This survey aimed to assess the prevalence and knowledge of coronary risk factors and self-perceived coronary heart disease risk among Greek-Australians in the Marrickville area of inner Sydney. A random sample of 834 household addresses was selected from the 2,403 households having Greek-Australian surnames on the electoral roll. In each household, one individual aged 18 years or over was selected using a Kish grid, and a questionnaire was administered by a bilingual interviewer. Questions concerned knowledge of and self-reported risk factors for coronary heart disease, and ratings of perceived stress, social support and networks. There was a response rate of 81 per cent of actual Greek-Australian households, a total of 541 interviews (61 per cent women). Most of the sample (86 per cent) were born in Greece and 77 per cent of interviews were administered in Greek. The age-adjusted male prevalences of self-reported smoking, high blood pressure, high blood cholesterol and body mass index over 26 kg/m2 were 44 per cent, 5 per cent, 14 per cent and 58 per cent, respectively. The age-adjusted female prevalences of self-reported smoking, high blood pressure, high blood cholesterol and body mass index over 26 kg/m2 were 19 per cent, 8 per cent, 15 per cent and 40 per cent, respectively. Compared to the National Heart Foundation risk-factor prevalence survey, the prevalence of self-reported high blood pressure was lower, but obesity and, among males, smoking, were higher. Low levels of education and poor English-language skills among older Greek-Australians may be contributing to the problem.(ABSTRACT TRUNCATED AT 250 WORDS)