Mersea, Ontario (1921 census)
Mersea was a census subdivision in Ontario, recorded in the 1921 Census of Canada with a population of 4,448. The administrative centroid was at approximately 42.083°N, 82.548°W.
Population
In 1921, Mersea had a population of 4,448: 2,394 male and 2,054 female residents. Population density was 40.5 people per square mile.
Population trajectory across census years
| Year | Population |
|---|---|
| 1851 | 1,193 |
| 1861 | 2,143 |
| 1871 | 3,248 |
| 1881 | 3,552 |
| 1891 | 3,788 |
| 1901 | 4,172 |
| 1911 | 4,081 |
| 1921 | 4,448 |
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, Mersea shared boundaries with:
Full census record, 1921
The 1921 census recorded 37 measurements for this Census Subdivision across 2 categories. Tables below are collapsible.
Population & families (3 variables)
| Variable | Value |
|---|---|
| POP F | 2,054 |
| POP M | 2,394 |
| POP TOT | 4,448 |
Other recorded variables (34 variables)
| Variable | Value |
|---|---|
| ANGLICANS | 417 |
| ASIA SYRIAN | 5 |
| BAPTISTS | 477 |
| BRIT BORN F | 123 |
| BRIT BORN M | 170 |
| BRIT ENG | 2,625 |
| BRIT IRISH | 674 |
| BRIT OTHER | 16 |
| BRIT SCOTCH | 499 |
| CAN BORN F | 1,767 |
| CAN BORN M | 1,986 |
| CHRISTIANS | 4 |
| CONGREGATIONALISTS | 1 |
| EUR AUSTRIAN | 12 |
| EUR BELGIAN | 137 |
| EUR DUTCH | 68 |
| EUR FRENCH | 220 |
| EUR GERMAN | 97 |
| EUR OTHER | 8 |
| EUR POLISH | 13 |
| EUR RUSSIAN | 35 |
| EUR SCANDINAVIAN | 9 |
| FOREIGN BORN F | 164 |
| FOREIGN BORN M | 238 |
| GREEK CHURCH | 38 |
| INDIAN | 13 |
| LUTHERANS | 8 |
| METHODISTS | 2,475 |
| NEGRO | 2 |
| OTHER SECTS | 58 |
| PRESBYTERIANS | 547 |
| ROMAN CATHOLICS | 379 |
| SALVATION ARMY | 24 |
| UNSPECIFIED | 15 |
Identifiers
- TCP UID:
ON110008— year-scoped identifier from the Canadian Census Subdivision boundary file - Persistent place ID:
PLACE_ON110008— 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). "Mersea, Ontario (1921 census)" in HGIS Canada Knowledge Graph. Retrieved from https://jimclifford.ca/hgiscanada/places/on/mersea-on110008-1921/.