Census Metropolitan Influence Zone
The census metropolitan influenced zone (MIZ) is a concept that geographically differentiates the area of Canada outside census metropolitan areas (CMAs) and census agglomerations (CAs).
Census subdivisions (CSDs) within provinces that are outside CMAs and CAs are assigned to 1 of 4 categories according to the degree of influence (strong, moderate, weak or no influence) that the CMAs or CAs have on them. CSDs within the territories that are outside CAs are assigned to a separate category.
A municipality within a province is assigned to a census metropolitan influenced zone (MIZ) category based on the percentage of its employed labour force that commutes to work in 1 or more of the municipalities (census subdivisions) that are part of the delineation core of a CMA or CA.
Appears in
Constraints
Unique key(s)
- Census Metropolitan Influence Zone Code, Geography Effective Date
Stereotype(s)
n/a
Attributes
| Attribute | Type | Multiplicity | Attribute note |
|---|---|---|---|
| Census Metropolitan Influence Zone Code | Codeable Concept | 1 | Uniquely specifies the metropolitan influence zone (e.g., 000-Territories, 996-Strong metropolitan influenced zone, 997-Moderate metropolitan influenced zone).
Value Set:
https://www12.statcan.gc.ca/census-recensement/2021/ref/dict/az/definition-eng.cfm?ID=geo010 |
| Geographic 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 |
|---|---|---|---|---|
| Census Metropolitan Influence Zone | 0..* | Statistical Area Classification | 0..* | |
| Census Subdivision | 0..* | Census Metropolitan Influence Zone | 0..* |
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How to cite:
Canadian Institute for Health Information. Census Metropolitan Influence Zone. Accessed November 02, 2026.
