This study provides reliable and valuable information on the characteristics of Domiciliary Hostel tenants in Ontario. Since the inception of the Domiciliary Hostel Program more than three decades ago, this program has clearly evolved from housing frail seniors to housing a diverse group of vulnerable adults, including individuals with mental and physical illness, developmental disabilities, as well as the elderly. While it is beyond the scope of this report to make specific policy or program recommendations, it is hoped that the information in this report will be useful in supporting future policy and program planning.