Grantham, Ontario (1871 census)
Grantham was a census subdivision in Ontario, recorded in the 1871 Census of Canada with a population of 3,929. The community is grounded to Wikidata Q5596641. The administrative centroid was at approximately 43.174°N, 79.215°W.
Population
In 1871, Grantham had a population of 3,929: 1,959 male and 1,970 female residents.
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.
Later boundary forms
- In a later year, this CSD contained Grantham, 1881 (92.3% of this CSD's polygon).
- In a later year, this CSD contained Merritton, T-V, 1881 (2.7% of this CSD's polygon).
Neighbouring Census Subdivisions in 1871
In the 1871 census, Grantham shared boundaries with:
- Louth
- Niagara, Township
- Port Dalhousie, VL
- St. Catherines, Town—Ville
- Stamford
- Thorold
- Thorold, Village
Full census record, 1871
The 1871 census recorded 18 measurements for this Census Subdivision across 4 categories.
Population & families (1871). This community's record includes 3,929 total population, 1,970 females, 1,959 males, 1,230 married persons, 695 families, 618 married females, 612 married males, 141 widowed persons, 115 widowed females, 26 widowed males. (Source: 1871 Census of Canada, V1T1.)
Age structure (1871). This community's record includes 2,558 single persons under 18, 1,321 single males under 18, 1,237 single females under 18. (Source: 1871 Census of Canada, V1T1.)
Buildings & housing (1871). This community's record includes 687 inhabited houses, 687 occupied houses, 13 uninhabited houses, 9 houses under construction. (Source: 1871 Census of Canada, V1T1.)
Agriculture (1871). This community's record includes 22,366 total area (acres). (Source: 1871 Census of Canada, V1T1.)
People with Dictionary of Canadian Biography entries
The Dictionary of Canadian Biography includes biographies of 2 people connected to this place who were alive in 1871, listed below by birth year. Each name links to that person's DCB entry.
| Name | Lifespan | Connection |
|---|---|---|
| Lillian Marietta Phelps | 1859–1920 | born here |
| Reuben Wells Leonard | 1860–1930 | died here |
Identifiers
- TCP UID:
ON021001— 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 1871 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 (1871 census)" in HGIS Canada Knowledge Graph. Retrieved from https://jimclifford.ca/hgiscanada/places/on/grantham-on021001-1871/.