Census boundary evidence
Isle Bizard — 1871 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
- QC108009_1871
- Source boundary identifier
- QC108009
- Census vintage
- 1871
- Source label
- Isle Bizard
- Province code
- QC
- District label
- Jacques Cartier
- Level
- csd
- Representation class
- E93_Presence
Census continuity group: Isle Bizard
TCP UID: QC108009
Census source records
Each link states the assessment that connected the source row to this map. Name candidates remain candidates; no source statistic is silently assigned to the map.
- Isle Bizard — 1871 · 1871_V1T1, row 766 source_identifier_and_context_agree
- Isle Bizard — 1871 · 1871_V3T23, row 766 source_identifier_and_context_agree
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 |
|---|---|---|---|---|---|
| St. Raphaël and Isle Bizard · 1861 | 1861 → 1871 | 22812919.085648697 | 1.0 | 1.0 | APPROXIMATELY_EQUAL_EXTENTHistorical succession verified: False |
| Isle Bizard S · 1881 | 1871 → 1881 | 13694285.529917002 | 0.6002864200983334 | 1.0000000000000002 | LATER_WITHIN_EARLIERHistorical succession verified: False |
| Isle Bizard N · 1881 | 1871 → 1881 | 9118633.555731693 | 0.3997135799016665 | 1.0000000000000007 | LATER_WITHIN_EARLIERHistorical succession verified: False |
Continuity assessments
- St. Raphaël and Isle Bizard (1861) → Isle Bizard (1871): name_change_requires_review