On October 23, 2024 Statistics Canada released the Coverage Technical Report for the 2021 Census of Population. The Coverage Technical Report presents the errors included in census data that resulted from persons who are either missed (not enumerated) or enumerated more than once. The population coverage error is one of the most important types of errors because it affects the accuracy of not only population counts, but also all the census data results that describe the characteristics of the population universe.
This report provides information on coverage errors at the national, provincial and CMA levels. CDP members in CMAs could use these values to get an idea of coverage errors at the community level.
Available here: https://www150.statcan.gc.ca/n1/en/catalogue/98-303-X