Health Regions: Boundaries and Correspondence with Census Geography
Table 2 Census geography definitions

Table summary
This table displays the results of Census geography definitions. The information is grouped by Geographic term (appearing as row headers), Definition (appearing as column headers).
Geographic term Definition
Census Subdivision (CSD) Area that is a municipality or an area that is deemed to be equivalent to a municipality for statistical reporting purposes (for example, as an Indian reserve or an unorganized territory). Municipal status is defined by laws in effect in each province and territory in Canada.
Dissemination area (DA) Small area composed of one or more neighbouring blocks, with a population of 400 to 700 persons. All of Canada is divided into dissemination areas.
Dissemination block (DB) An area equivalent to a city block bounded by intersecting streets. These areas cover all of Canada.
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