Census boundary evidence
Aird Island — 1911 census geography (ON)
This page identifies a census boundary representation. Source-table records below retain their own reporting-unit identity and geographic qualifications.
- Map snapshot identifier
- ON054001_1911
- Source boundary identifier
- ON054001
- Census vintage
- 1911
- Source label
- Aird Island
- Province code
- ON
- District label
- Algoma E
- Level
- csd
- Representation class
- E93_Presence
Census continuity group: Aird Island
TCP UID: ON054001
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.
- Aird Island — 1911 · 1911_V1T1, row 4197 unique_contextual_name_candidate
- Aird Island — 1911 · 1911_V1T2, row 4153 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 |
|---|---|---|---|---|---|
| Aird Island · 1901 | 1901 → 1911 | 12990255.017423991 | 0.9999998564666899 | 0.9999998260832473 | APPROXIMATELY_EQUAL_EXTENTHistorical succession verified: False |
| Aird Island · 1921 | 1911 → 1921 | 12990255.400218194 | 0.9999998555510395 | 0.9999998739944683 | APPROXIMATELY_EQUAL_EXTENTHistorical succession verified: False |
Continuity assessments
- Aird Island (1901) → Aird Island (1911): supported_spatial_name_continuity
- Aird Island (1911) → Aird Island (1921): supported_spatial_name_continuity