Census boundary evidence
Isle du Pad — 1881 census geography (QC)
This page identifies a census boundary representation. Source-table records below retain their own reporting-unit identity and geographic qualifications.
- Map snapshot identifier
- QC086005_1881
- Source boundary identifier
- QC086005
- Census vintage
- 1881
- Source label
- Isle du Pad
- Province code
- QC
- District label
- Berthier
- Level
- csd
- Representation class
- E93_Presence
Census continuity group: Isle du Pad
TCP UID: QC086005
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 |
|---|---|---|---|---|---|
| Berthier · 1871 | 1871 → 1881 | 8422593.431032708 | 0.10655512348207077 | 0.14607278466853196 | PARTIAL_OVERLAPHistorical succession verified: False |
| Isle du Pads · 1871 | 1871 → 1881 | 34741023.129178494 | 0.9999999999538858 | 0.6025125197205154 | EARLIER_WITHIN_LATERHistorical succession verified: False |
| Sorel · 1871 | 1871 → 1881 | 14496634.458794437 | 0.11254671241272844 | 0.251414695610953 | PARTIAL_OVERLAPHistorical succession verified: False |
| Visitation de l’île Dupas · 1891 | 1881 → 1891 | 57660251.01900566 | 1.0000000000000007 | 1.0000000000000007 | APPROXIMATELY_EQUAL_EXTENTHistorical succession verified: False |
Continuity assessments
- Isle du Pad (1881) → Visitation de l’île Dupas (1891): name_change_requires_review
Area separations
| Earlier area | Continuing area | Separate area | Retained fraction | Separated fraction | Comparison status |
|---|---|---|---|---|---|
| Berthier · 1871 | Berthier · 1881 | Isle du Pad | 0.8934448765179297 | 0.1065551234820707 | later_totals_require_geographic_reconciliation |
Individual records from the 1881 census
The individual census transcription is a separate dataset. Existing person citation anchors and the published geographic grouping are preserved. These records are not population totals derived from the rebuilt aggregate tables.