Epidemiological understanding of insomnia and other sleep disorders has grown in recent years in France. The purpose of this study is to quantify sleep duration and the prevalence of chronic insomnia among the population aged 15–85, and to explore the factors associated with this condition. As part of the 2010 Health Barometer, a general population survey, 27,653 individuals aged 15–85 were interviewed about their health behaviors, particularly regarding their sleep habits. The average sleep duration for those aged 15–85 is 7 hours and 13 minutes, with women sleeping longer than men (7 hours and 18 minutes versus 7 hours and 7 minutes; p