The psychological distress index is a non-specific measure of mental health status that is very useful in a context where it is difficult to establish a profile of the general population’s mental health due to limited data available. In 2008, the most recent data that could be used to measure psychological distress among Quebecers were from Cycle 3.1 of the 2005 Canadian Community Health Survey (CCHS). The psychological distress index discussed in this article is based on the Kessler Psychological Distress Scale (K10). The analyses focus on the Québec population aged 15 and over and take into account sociodemographic and economic characteristics such as sex, age, marital status and household income. Also discussed in this bulletin are links to other health indicators (self-rated general health and mental health, life satisfaction) and social environment (social support index).