Dissemination Area
A small, relatively stable geographic unit composed of 1 or more adjacent dissemination blocks with an average population of 400 to 700 persons, based on data from the previous Census of Population Program.
Appears in
Constraints
Unique key(s)
- Dissemination Area Code, Geography Effective Date
Stereotype(s)
n/a
Attributes
| Attribute | Type | Multiplicity | Attribute note |
|---|---|---|---|
| Income Quintile Code | Codeable Concept | 0..1 | Uniquely specifies an income quintile.
Value Set: To be developed. |
| Dissemination Area Code | Codeable Concept | 1 | |
| Income Decile Code | Codeable Concept | 0..1 | Uniquely specifies an income decile.
Value Set: To be developed. |
| Geographical Boundary | Polygon | 0..1 | The abstract lines or physical features that separate one place or area from another. |
| Geography Effective Date | Date | 1 | The first date when the information specified is valid, which is generally the release date of a census. |
Relationships
| From class | From multiplicity | Relationship | To class | To multiplicity |
|---|---|---|---|---|
| Dissemination Area | 0..* | has (composition) | Dissemination Block | 1..* |
| Census Subdivision | 1 | has {best fit linkage} |
Dissemination Area | 0..* |
| Dissemination Area | 1 | has | Canadian Postal Code | 1..* |
| Province Or Territory Health Region | 1..* | {best fit linkage} |
Dissemination Area | 1..* |
| Health Subregion | 1..* | {best fit linkage} |
Dissemination Area | 1..* |
Contact us
If you have questions about this initiative, would like to be added to our stakeholder notification list or would like to participate in our consultations, please email us.
How to cite:
Canadian Institute for Health Information. Dissemination Area. Accessed November 02, 2026.
