Grantham, Ontario (1921 census)
Grantham was a census subdivision in Ontario, recorded in the 1921 Census of Canada with a population of 4,412. The community is grounded to Wikidata Q5596641. The administrative centroid was at approximately 43.175°N, 79.216°W.
Population
In 1921, Grantham had a population of 4,412: 2,357 male and 2,055 female residents. Population density was 114.6 people per square mile.
Population trajectory across census years
| Year | Population |
|---|---|
| 1851 | 3,216 |
| 1861 | 3,956 |
| 1871 | 3,929 |
| 1881 | 2,218 |
| 1891 | 1,928 |
| 1901 | 1,941 |
| 1911 | 2,439 |
| 1921 | 4,412 |
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 Grantham, 1911 (85.1% share).
Neighbouring Census Subdivisions in 1921
In the 1921 census, Grantham shared boundaries with:
Full census record, 1921
The 1921 census recorded 48 measurements for this Census Subdivision across 2 categories. Tables below are collapsible.
Population & families (3 variables)
| Variable | Value |
|---|---|
| POP F | 2,055 |
| POP M | 2,357 |
| POP TOT | 4,412 |
Other recorded variables (45 variables)
| Variable | Value |
|---|---|
| ADVENTISTS | 8 |
| ANGLICANS | 1,703 |
| ASIA OTHER | 90 |
| BAPTISTS | 185 |
| BRETHREN | 6 |
| BRIT BORN F | 514 |
| BRIT BORN M | 565 |
| BRIT ENG | 2,276 |
| BRIT IRISH | 591 |
| BRIT OTHER | 40 |
| BRIT SCOTCH | 563 |
| CAN BORN F | 1,392 |
| CAN BORN M | 1,493 |
| CHRISTIANS | 10 |
| CONGREGATIONALISTS | 3 |
| DISCIPLES OF CHRIST | 1 |
| EUR AUSTRIAN | 40 |
| EUR DUTCH | 161 |
| EUR FINNISH | 14 |
| EUR FRENCH | 131 |
| EUR GERMAN | 117 |
| EUR GREEK | 1 |
| EUR HEBREW | 1 |
| EUR ITALIAN | 114 |
| EUR OTHER | 44 |
| EUR POLISH | 43 |
| EUR RUSSIAN | 93 |
| EUR SCANDINAVIAN | 18 |
| EUR UKRAINIAN | 31 |
| EVANGELICAL ASSOCIATION | 1 |
| FOREIGN BORN F | 149 |
| FOREIGN BORN M | 299 |
| GREEK CHURCH | 209 |
| INDIAN | 12 |
| JEWS | 1 |
| LUTHERANS | 21 |
| MENNONITES | 2 |
| METHODISTS | 876 |
| NEGRO | 25 |
| OTHER SECTS | 57 |
| PRESBYTERIANS | 717 |
| PROTESTANTS | 23 |
| ROMAN CATHOLICS | 583 |
| SALVATION ARMY | 6 |
| UNSPECIFIED | 7 |
Identifiers
- TCP UID:
ON126004— year-scoped identifier from the Canadian Census Subdivision boundary file - Persistent place ID:
PLACE_ON126004— computed from spatial-overlap chains across census years - Wikidata: Q5596641
- Wikipedia (EN): https://en.wikipedia.org/wiki/Grantham_Township
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). "Grantham, Ontario (1921 census)" in HGIS Canada Knowledge Graph. Retrieved from https://jimclifford.ca/hgiscanada/places/on/grantham-on126004-1921/.