We examine the demographic, socio-economic and socio-cultural factors that underlie solo-living at mid-adult ages. Both individual and community level factors are analysed. The analysis is based on the longitudinal panel data of the Canadian Survey of Labour and Income Dynamics in 1996–2001, 1999–2004, 2002–2008 and 2005–2010, and census data at the Census District level for 1996, 2001 and 2006. A two-level discrete-time survival model is used within a 6 year observational window for each panel. The analysis starts with persons aged 35–59 who were living alone at the outset of a given panel and follows their departure from this status over the following 6 years. For both men and women, the older respondents, those who have been living solo for a longer time, those who are not in the labour force, and those living in apartments, are more likely to continue living alone. Women are more likely to keep their initial one person household status compared to men in general. In particular, women with medium education (non-university post-secondary certification) are more likely to continue living alone, while for men it is those unemployed who are more likely to remain in the solo-living status. Moreover, persons with lower health status are more likely to continue living by themselves, in comparison to those with excellent health status.