Census boundary evidence
Rock Island vl — 1911 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
- QC200014_1911
- Source boundary identifier
- QC200014
- Census vintage
- 1911
- Source label
- Rock Island vl
- Province code
- QC
- District label
- Stanstead
- Level
- csd
- Representation class
- E93_Presence
Census continuity group: Rock Island vl
TCP UID: QC200014
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.
- Rock Island vl — 1911 · 1911_V1T1, row 6743 unique_contextual_name_candidate
- Rock Island — 1911 · 1911_V1T2, row 6690 unique_contextual_name_candidate
- Rock Island vl — 1911 · 1911_V2T2, row 3333 unique_contextual_name_candidate
- Rock Island — 1911 · 1911_V2T7, row 3330 unique_contextual_name_candidate
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 |
|---|---|---|---|---|---|
| Rock Island, Village · 1901 | 1901 → 1911 | 2121347.549455722 | 0.9999999205331612 | 0.9999996865978358 | APPROXIMATELY_EQUAL_EXTENTHistorical succession verified: False |
| Stanstead · 1901 | 1901 → 1911 | 0.006173850944954875 | 1.9967024723452116e-11 | 2.9103430089240507e-09 | PARTIAL_OVERLAPHistorical succession verified: False |
| Stanstead Plain, Village · 1901 | 1901 → 1911 | 0.5285575448651798 | 7.418059823815033e-08 | 2.491611425717178e-07 | PARTIAL_OVERLAPHistorical succession verified: False |
| Beebe Plains, VL · 1921 | 1911 → 1921 | 0.004488160195961441 | 2.1157112093743704e-09 | 5.341135530995829e-10 | PARTIAL_OVERLAPHistorical succession verified: False |
| Rock Island, VL · 1921 | 1911 → 1921 | 2121347.6439594016 | 0.9999997311467124 | 0.9999998938025038 | APPROXIMATELY_EQUAL_EXTENTHistorical succession verified: False |
| Stanstead Plain, VL · 1921 | 1911 → 1921 | 0.4612734360701406 | 2.1744352622671244e-07 | 6.473758736150835e-08 | PARTIAL_OVERLAPHistorical succession verified: False |
Continuity assessments
- Rock Island, Village (1901) → Rock Island vl (1911): name_change_requires_review
- Rock Island vl (1911) → Rock Island, VL (1921): name_change_requires_review