Ottawa, Ontario

Ottawa was an Census Division in Ontario as recorded in the 1861 Canadian census series. It comprised the constituent Census Subdivisions listed below for each year it appears in the published volumes. This CD is grounded to Wikidata Q1930.

Population trajectory across census years

Aggregate population summed from constituent Census Subdivisions in this Census Division each year. Where the published 1851–1921 census volumes report a CD-level total, the figures should match within rounding; for cities split into wards, the per-CSD sum may diverge from the published CD aggregate.

Constituent Census Subdivisions by year

1861 census

• By Ward (pop 3,930)
• Hospital and other Institutions (pop 231)
• Ottawa Ward (pop 3,689)
• St. Georges’ Ward (pop 2,437)
• Victoria Ward (pop 2,039)
• Wellington Ward (pop 2,343)

Lineage

Boundary changes connecting this Census Division to others in the 1851–1921 series, derived from spatial polygon overlap across census-year boundary files.

• Re-formed from Bytown in 1861.
• Split into Ottawa City in 1871.

Identifiers

• HGIS Canada CD ID: CD_ON_Ottawa
• Wikidata: Q1930
• Wikipedia (EN): https://en.wikipedia.org/wiki/Ottawa
• Wikipédia (FR): https://fr.wikipedia.org/wiki/Ottawa

Sources

Census Division boundaries derived from the Canadian Peoples / TCP 1851–1921 Census Subdivision boundary files (NAME_CD_<year> attributes, hosted at the HGIS Lab, University of Saskatchewan). Constituent-CSD memberships use the P10_falls_within CIDOC-CRM relationships emitted by the spatial CIDOC builder. Wikidata grounding for Census Divisions performed via the HGIS Canada Knowledge Graph project's MCP-assisted disambiguation pipeline. See the About / Methodology page for the full data pipeline.