Grattan, Ontario (1921 census)
Grattan was a census subdivision in Ontario, recorded in the 1921 Census of Canada with a population of 1,700. The community is grounded to Wikidata Q115261611. The administrative centroid was at approximately 45.448°N, 77.052°W.
Population
In 1921, Grattan had a population of 1,700: 876 male and 824 female residents. Population density was 14.7 people per square mile.
Population trajectory across census years
| Year | Population |
|---|---|
| 1851 | 554 |
| 1861 | 1,253 |
| 1871 | 1,481 |
| 1881 | 1,893 |
| 1891 | 1,724 |
| 1901 | 2,078 |
| 1911 | 1,977 |
| 1921 | 1,700 |
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 contained Killaloe, VL, 1911 (0.9% share).
Neighbouring Census Subdivisions in 1921
In the 1921 census, Grattan shared boundaries with:
Full census record, 1921
The 1921 census recorded 27 measurements for this Census Subdivision across 2 categories. Tables below are collapsible.
Population & families (3 variables)
| Variable | Value |
|---|---|
| POP F | 824 |
| POP M | 876 |
| POP TOT | 1,700 |
Other recorded variables (24 variables)
| Variable | Value |
|---|---|
| ANGLICANS | 161 |
| BAPTISTS | 25 |
| BRIT BORN F | 15 |
| BRIT BORN M | 15 |
| BRIT ENG | 38 |
| BRIT IRISH | 834 |
| BRIT SCOTCH | 109 |
| CAN BORN F | 780 |
| CAN BORN M | 824 |
| EUR DUTCH | 2 |
| EUR FINNISH | 1 |
| EUR FRENCH | 362 |
| EUR GERMAN | 346 |
| EUR HEBREW | 4 |
| EVANGELICAL ASSOCIATION | 12 |
| FOREIGN BORN F | 29 |
| FOREIGN BORN M | 37 |
| INDIAN | 4 |
| LUTHERANS | 288 |
| METHODISTS | 26 |
| OTHER SECTS | 1 |
| PRESBYTERIANS | 181 |
| PROTESTANTS | 1 |
| ROMAN CATHOLICS | 1,005 |
Identifiers
- TCP UID:
ON142013— year-scoped identifier from the Canadian Census Subdivision boundary file - Persistent place ID:
PLACE_ON142013— computed from spatial-overlap chains across census years - Wikidata: Q115261611
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). "Grattan, Ontario (1921 census)" in HGIS Canada Knowledge Graph. Retrieved from https://jimclifford.ca/hgiscanada/places/on/grattan-on142013-1921/.