Yes, the information is available on the Statistics Canada website free of charge, of course, and it's related to the 2016 census. There's a web page with all of the 2016 census results focusing on age and sex. In there you have differences in terms of, for example, the proportion of young adults, the proportion of seniors, the proportion of the most elderly, and the proportion of young children living in the different regions of Canada. We go all the way down, for example, to what we call the census subdivisions, which are basically the municipalities across the country.
With this website you'll be able to compare, for example, the proportion of seniors living in a municipality in Atlantic Canada to any other municipality across the country, and that's very convenient.