St. Isidore, Quebec (1921 census)
St. Isidore was a census subdivision in Quebec, recorded in the 1921 Census of Canada with a population of 1,129. The community is grounded to Wikidata Q112912306. The administrative centroid was at approximately 45.295°N, 73.682°W.
Population
In 1921, St. Isidore had a population of 1,129: 590 male and 539 female residents.
Population trajectory across census years
| Year | Population |
|---|---|
| 1861 | 1,992 |
| 1871 | 1,814 |
| 1881 | 1,591 |
| 1891 | 1,463 |
| 1901 | 1,315 |
| 1911 | — |
| 1921 | 1,129 |
Cross-year identity established by spatial polygon overlap (SAME_AS chains across the Canadian Census Subdivision boundary files).
Neighbouring Census Subdivisions in 1921
In the 1921 census, St. Isidore shared boundaries with:
- Indian reserves (Sault St. Louis)
- St. Constant
- St. Joachim de Châteauguay
- St. Rémi de La Salle
- St. Urbain Premier
- Ste. Philomène
Full census record, 1921
The 1921 census recorded 10 measurements for this Census Subdivision across 3 categories.
Population & families (1921). This community's record includes 1,129 total population, 590 males in the population, 589 males born in Canada, 539 females in the population, 538 females born in Canada, 1 females born in the British Empire (excluding Canada), 1 males born in the British Empire (excluding Canada). (Source: 1921 Census of Canada, V1T16.)
Ethnic origin (1921). This community's record includes 1,127 persons of French origin, 2 persons of British origin (English). (Source: 1921 Census of Canada, V1T27.)
Religion (1921). This community's record includes 1,129 Roman Catholics. (Source: 1921 Census of Canada, V1T38.)
Identifiers
- TCP UID:
QC064003— year-scoped identifier from the Canadian Census Subdivision boundary file - Persistent place ID:
PLACE_QC064003_1861— computed from spatial-overlap chains across census years - Wikidata: Q112912306
Sources
Census tabulations from the 1921 Census of Canada, transcribed and georeferenced by the Canadian Peoples / TCP project, hosted at the HGIS Lab, University of Saskatchewan. Persistent place identity computed from spatial-overlap chains across all available census years (1851–1921). Identity grounding to Wikidata performed via the HGIS Canada Knowledge Graph project's MCP-assisted disambiguation pipeline. See the About / Methodology page for the full data pipeline.
Cite this page
Clifford, J. (2026). "St. Isidore, Quebec (1921 census)" in HGIS Canada Knowledge Graph. Retrieved from https://jimclifford.ca/hgiscanada/places/qc/st-isidore-qc064003-1921/.