Census boundary evidence
Armagh — 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
- QC162003_1871
- Source boundary identifier
- QC162003
- Census vintage
- 1871
- Source label
- Armagh
- Province code
- QC
- District label
- Bellechasse Sud
- Level
- csd
- Representation class
- E93_Presence
Census continuity group: Armagh
TCP UID: QC162003
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 |
|---|---|---|---|---|---|
| Armagh · 1861 | 1861 → 1871 | 280348341.10374254 | 1.0000000000000004 | 1.0000000000000004 | APPROXIMATELY_EQUAL_EXTENTHistorical succession verified: False |
| Montminy, Ashburton, Rolette & c · 1881 | 1871 → 1881 | 35689702.762558386 | 0.1273048473268885 | 0.05103699973789131 | PARTIAL_OVERLAPHistorical succession verified: False |
| Armagh · 1881 | 1871 → 1881 | 244658638.34118414 | 0.8726951526731119 | 1.0 | LATER_WITHIN_EARLIERHistorical succession verified: False |
Continuity assessments
- Armagh (1861) → Armagh (1871): supported_spatial_name_continuity
- Armagh (1871) → Armagh (1881): supported_continuity_with_area_separation
Area separations
| Earlier area | Continuing area | Separate area | Retained fraction | Separated fraction | Comparison status |
|---|---|---|---|---|---|
| Armagh · 1871 | Armagh · 1881 | Montminy, Ashburton, Rolette & c | 0.8726951526731119 | 0.1273048473268885 | later_totals_require_geographic_reconciliation |