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 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 density was 54.5 people per square mile.
Population trajectory across census years
| Year | Population |
|---|---|
| 1851 | 2,133 |
| 1861 | 1,992 |
| 1871 | 1,814 |
| 1881 | 1,591 |
| 1891 | 1,463 |
| 1901 | 1,315 |
| 1911 | 1,166 |
| 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:
- 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 2 categories. Tables below are collapsible.
Population & families (3 variables)
| Variable | Value |
|---|---|
| POP F | 539 |
| POP M | 590 |
| POP TOT | 1,129 |
Other recorded variables (7 variables)
| Variable | Value |
|---|---|
| BRIT BORN F | 1 |
| BRIT BORN M | 1 |
| BRIT ENG | 2 |
| CAN BORN F | 538 |
| CAN BORN M | 589 |
| EUR FRENCH | 1,127 |
| ROMAN CATHOLICS | 1,129 |
Identifiers
- TCP UID:
QC064003— year-scoped identifier from the Canadian Census Subdivision boundary file - Persistent place ID:
PLACE_QC064003_1851— computed from spatial-overlap chains across census years - Wikidata: not yet grounded. This page covers a place whose persistent identity has not yet been linked to a Wikidata entity. Identification is via TCP UID and spatial polygon only.
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/.