Waterloo, Ontario

Waterloo was a Census Division in Ontario as recorded in the 1851–1921 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 Q7974224.

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

1851 census

• Dumfries N wd (pop 3,476)
• Galt, Town—Ville wd (pop 2,248)
• Preston, Village wd (pop 1,180)
• Waterloo wd (pop 7,698)
• Wellesley wd (pop 3,546)
• Wilmot wd (pop 5,297)
• Woolwich wd (pop 3,092)

1861 census

• Berlin, Town—Ville wd (pop 1,956)
• Dumfries N wd (pop 4,161)
• Galt, Town—Ville wd (pop 3,069)
• Hespeler, Village wd (pop 604)
• New Hamburg, Village wd (pop 868)
• Preston, Village wd (pop 1,538)
• Waterloo wd (pop 1,273)
• Waterloo N (pop 3,969)
• Waterloo S (pop 3,995)
• Wellesley wd (pop 5,888)
• Wilmot wd (pop 6,173)
• Woolwich wd (pop 5,256)

1921 census

• Ayr, Village wd (pop 777)
• Berlin, Town—Ville wd (pop 21,763)
• Dumfries N wd (pop 2,146)
• Elmira, Village wd (pop 2,016)
• Galt, Town—Ville wd (pop 13,216)
• Hespeler, Village wd (pop 2,777)
• New Hamburg, Village wd (pop 1,351)
• Preston, Village wd (pop 5,423)
• Waterloo N & S (pop 7,380)
• Waterloo, T-V wd (pop 5,883)
• Wellesley wd (pop 4,466)
• Wilmot wd (pop 4,263)
• Woolwich wd (pop 3,805)

Lineage

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

• Split into Waterloo North, Waterloo South in 1871.
• Re-formed from Waterloo North, Waterloo South in 1921.

Identifiers

• HGIS Canada CD ID: CD_ON_Waterloo
• Wikidata: Q7974224
• Wikipedia (EN): https://en.wikipedia.org/wiki/Waterloo_County

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.