Census boundary evidence
St. Germain de Grantham — 1921 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
- QC054010_1921
- Source boundary identifier
- QC054010
- Census vintage
- 1921
- Source label
- St. Germain de Grantham
- Province code
- QC
- District label
- Drummond
- Level
- csd
- Representation class
- E93_Presence
Census continuity group: St. Germain de Grantham
TCP UID: QC054010
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.
- St. Germain de Grantham — 1921 · 1921_V1T16, row 1155 unique_contextual_name_candidate
- St. Germain de Grantham — 1921 · 1921_V1T27, row 1155 unique_contextual_name_candidate
- St. Germain de Grantham — 1921 · 1921_V1T38, row 1155 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 |
|---|---|---|---|---|---|
| St. Nazaire d'Acton · 1911 | 1911 → 1921 | 0.2099644985342798 | 3.62394203657879e-09 | 2.389918316086713e-09 | PARTIAL_OVERLAPHistorical succession verified: False |
| Grantham · 1911 | 1911 → 1921 | 0.09785434447405579 | 1.6741080085298436e-09 | 1.1138258696101563e-09 | PARTIAL_OVERLAPHistorical succession verified: False |
| St. Eugène de Grantham · 1911 | 1911 → 1921 | 1.1342449579602771 | 1.497454891981546e-08 | 1.2910529250809036e-08 | PARTIAL_OVERLAPHistorical succession verified: False |
| St. Germain de Grantham · 1911 | 1911 → 1921 | 86651903.71347524 | 0.6980050667918156 | 0.9863142257585327 | LATER_WITHIN_EARLIERHistorical succession verified: False |
| St. Majorique de Grantham · 1911 | 1911 → 1921 | 0.0017822620282787235 | 3.070241576615196e-11 | 2.0286575564838917e-11 | PARTIAL_OVERLAPHistorical succession verified: False |
| Wickham · 1911 | 1911 → 1921 | 0.028991705116143646 | 2.7467301195458887e-10 | 3.2999772606960176e-10 | PARTIAL_OVERLAPHistorical succession verified: False |
| Wickham W-O · 1911 | 1911 → 1921 | 1202352.0579591563 | 0.008752430653942775 | 0.013685757476909822 | PARTIAL_OVERLAPHistorical succession verified: False |
Continuity assessments
- St. Germain de Grantham (1911) → St. Germain de Grantham (1921): supported_continuity_with_area_separation
Area separations
| Earlier area | Continuing area | Separate area | Retained fraction | Separated fraction | Comparison status |
|---|---|---|---|---|---|
| St. Germain de Grantham · 1911 | St. Germain de Grantham · 1921 | St. Edmond de Grantham | 0.6980050667918156 | 0.3019949205356816 | later_totals_require_geographic_reconciliation |