Census Tract
A small, relatively stable geographic area that usually has a population of less than 7,500 persons, based on data from the previous Census of Population Program.<br/>
- Attributes
- Associations To
- Associations From
- Constraints
| Attribute |
Type |
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Census Tract Identifier
|
String
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Notes:
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Identifies a census tract within a census metropolitan area or census agglomeration. The first three digits represent the metropolitan area/census agglomeration code followed by the census tract 'name'. This is then followed by a decimal point and then two more digits. These two digits represent census tracts that have been split into two or more parts due to a population increase. For example, CT 0412.24 means the census tract has been split 24 times.<br/>
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Geographic Boundary
|
Polygon
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Notes:
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The abstract lines or physical features that separate one place or area from another.<br/>
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Geography Effective Date
|
Date
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Notes:
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The first date when the information specified is valid, which is generally the release date of a census.<br/>
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| Relationship |
Target Entity |
|
has
A Census tract can belong to a Census Metropolitan Area (CMA) OR a Census Agglomeration (CA), depending on the size of the population.<br/>
|
Census Metropolitan Area
|
| Relationship |
Target Entity |
|
has
A Census tract can belong to a Census Metropolitan Area (CMA) OR a Census Agglomeration (CA), depending on the size of the population.<br/><br/>
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Census Agglomeration
|
| Constraint |
| Unique Key: Census Tract Identifier, Geography Effective Date |
| XOR(Census Metropolitan Area, Census Agglomeration) |
