St. Didace, Quebec (1921 census)
St. Didace was a census subdivision in Quebec, recorded in the 1921 Census of Canada with a population of 1,050. The administrative centroid was at approximately 46.354°N, 73.242°W.
Population
In 1921, St. Didace had a population of 1,050: 524 male and 526 female residents. Population density was 26.0 people per square mile.
Population trajectory across census years
| Year | Population |
|---|---|
| 1851 | 689 |
| 1861 | 1,654 |
| 1871 | 2,055 |
| 1881 | 2,403 |
| 1891 | 1,954 |
| 1901 | 1,499 |
| 1911 | 1,463 |
| 1921 | 1,050 |
Cross-year identity established by spatial polygon overlap (SAME_AS chains across the Canadian Census Subdivision boundary files).
Boundary continuity (non-identical overlaps)
Spatial polygon overlaps with adjacent census years where the boundary shifted enough that the SAME_AS chain didn't merge them. These show where the territory came from and went to even when it isn't tracked as the same persistent place.
Earlier boundary forms
- In an earlier year, this CSD was contained in St. Didace, 1911 (79.5% share).
Neighbouring Census Subdivisions in 1921
In the 1921 census, St. Didace shared boundaries with:
- St. Alexis des Monts
- St. Barthélemy
- St. Charles de Mandeville
- St. Edouard de Maskinongé
- St. Gabriel de Brandon
- St. Justin
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 | 526 |
| POP M | 524 |
| POP TOT | 1,050 |
Other recorded variables (7 variables)
| Variable | Value |
|---|---|
| BRIT ENG | 10 |
| CAN BORN F | 521 |
| CAN BORN M | 522 |
| EUR FRENCH | 1,040 |
| FOREIGN BORN F | 5 |
| FOREIGN BORN M | 2 |
| ROMAN CATHOLICS | 1,050 |
Identifiers
- TCP UID:
QC069006— year-scoped identifier from the Canadian Census Subdivision boundary file - Persistent place ID:
PLACE_QC069006— 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. Didace, Quebec (1921 census)" in HGIS Canada Knowledge Graph. Retrieved from https://jimclifford.ca/hgiscanada/places/qc/st-didace-qc069006-1921/.