Census boundary evidence
NO DATA — 1881 census geography (QC)
This is a NO DATA coverage record. It identifies map coverage, not a historical community or a population of zero.
- Map snapshot identifier
- QC091999_1881
- Source boundary identifier
- QC091999
- Census vintage
- 1881
- Source label
- NO DATA
- Province code
- QC
- District label
- Hochelaga
- Level
- csd
- Representation class
- E73_Information_Object
TCP UID: QC091999
Census source records
No source row has a supported or candidate endpoint here in the current assessment. This does not mean the population was zero.
Boundary intersections across censuses
These are computed polygon intersections in the equal-area CRS ESRI:102001. Fractions describe the area of the earlier and later polygons, respectively. They do not establish historical succession, and population has not been apportioned by area. All positive intersections are retained, including very small contributions.
| Other census representation | Years (earlier → later) | Overlap (m²) | Fraction of earlier area | Fraction of later area | Evidence |
|---|---|---|---|---|---|
| Montréal, St. Antoine Ward—Quartier · 1871 | 1871 → 1881 | 438242.5057453091 | 0.09172121152534495 | 0.08830615834387347 | PARTIAL_OVERLAPHistorical succession verified: False |
| Côte des Neiges · 1871 | 1871 → 1881 | 376543.7827497394 | 0.03456799644590245 | 0.07587382434834825 | PARTIAL_OVERLAPHistorical succession verified: False |
| Côteau St. Louis · 1871 | 1871 → 1881 | 1564837.8006208597 | 0.14416988783681078 | 0.31531586460125893 | PARTIAL_OVERLAPHistorical succession verified: False |
| NO DATA · 1871 | 1871 → 1881 | 2583138.576187095 | 1.0000000000000002 | 0.5205041527065226 | EARLIER_WITHIN_LATERHistorical succession verified: False |
| NO DATA · 1891 | 1881 → 1891 | 4962762.665302987 | 1.0 | 1.0 | APPROXIMATELY_EQUAL_EXTENTHistorical succession verified: False |
Continuity assessments
- NO DATA (1881) → NO DATA (1891): coverage_record_not_identity
Area separations
| Earlier area | Continuing area | Separate area | Retained fraction | Separated fraction | Comparison status |
|---|---|---|---|---|---|
| Montréal, St. Antoine Ward—Quartier · 1871 | Montréal, St. Antoine Ward—Quartier · 1881 | NO DATA | 0.9082787884746552 | 0.0917212115253449 | later_totals_require_geographic_reconciliation |