Multimorbidity, the co-occurrence of two or more chronic conditions, is common among older adults. In Canada, 74% of individuals aged 65+ reported having one or more of 11 chronic conditions in 2008. Multimorbidity has been associated with lower health related quality of life, higher utilization of health care services and prescribed medications, increased disability, and mortality. However, population-based estimates of multimorbidity are not readily available, which makes future planning a challenge. In order to better inform approaches to care management, there remains a need to explore multimorbidity, at a population-level.