Census boundary evidence
Magdalen Islands — 1861 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
- QC019017_1861
- Source boundary identifier
- QC019017
- Census vintage
- 1861
- Source label
- Magdalen Islands
- Province code
- QC
- District label
- Gaspé
- Level
- csd
- Representation class
- E93_Presence
Census continuity group: Magdalen Islands
TCP UID: QC019017
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.
- Magdalen Islands — 1861 · 1861_V1T1, row 213 source_identifier_and_context_agree
- Magdalen Islands — 1861 · 1861_V1T5, row 213 source_identifier_and_context_agree
- Magdalen Islands — 1861 · 1861_V2T11, row 213 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 |
|---|---|---|---|---|---|
| Madeleine Islands · 1851 | 1851 → 1861 | 243413478.3875445 | 1.0000000000000038 | 1.0000000000000004 | APPROXIMATELY_EQUAL_EXTENTHistorical succession verified: False |
| Groupe Sud · 1871 | 1861 → 1871 | 85925427.58671817 | 0.35300192970380323 | 1.0 | LATER_WITHIN_EARLIERHistorical succession verified: False |
| Grindstone Island · 1871 | 1861 → 1871 | 62629407.36295055 | 0.2572963821799415 | 1.0000000000000013 | LATER_WITHIN_EARLIERHistorical succession verified: False |
| Allright Island · 1871 | 1861 → 1871 | 28075202.136155244 | 0.11533955441635835 | 0.9999999999999996 | LATER_WITHIN_EARLIERHistorical succession verified: False |
| Groupe Nord · 1871 | 1861 → 1871 | 66783441.30172002 | 0.27436213369989526 | 1.0000000000000009 | LATER_WITHIN_EARLIERHistorical succession verified: False |
Continuity assessments
- Madeleine Islands (1851) → Magdalen Islands (1861): name_change_requires_review