Longueuil
city in Montérégie, Quebec, Canada
Longueuil (French pronunciation: [lɔ̃ɡœj] ) is a city in the province of Quebec, Canada. It is the seat of the Montérégie administrative region and the central city of the urban agglomeration of Longueuil. It sits on the south shore of the Saint Lawrence River directly across from Montreal. The population as of the Canada 2021 Census totalled 254,483, making it Montreal's second largest suburb, the fifth most populous city in Quebec and twentieth largest in Canada.
Charles Le Moyne founded Longueuil as a seigneurie in 1657. It would become a parish in 1845, a village in 1848, a town in 1874 and a city in 1920. Between 1961 and 2002, Longueuil's borders grew three times, as it was amalgamated with surrounding municipalities; there was a strong de-amalgamation in 2006 (see 2000–2006 municipal reorganization in Quebec).
Longueuil is a residential, commercial and industrial city. It incorporates some urban features, but is essentially a suburb. Longueuil can be classified as a commuter town as a large portion of its residents commute to work in Montreal.
“Longueuil” enters the record as city in Montérégie, Quebec, Canada. Crown Archives preserves that source wording while asking what Longueuil, city and Montérégie can confirm, complicate or overturn.
Why this record matters
“Longueuil” is worth following because a concise public description often conceals a longer documentary argument. Here, Longueuil, city and Montérégie provides the most credible route into that argument.
The strongest evidence will usually combine a dated visual record with documents produced by the authority responsible for the place. The source revision retrieved here is dated Sep 20, 2026. The linked authority identifier is Q139398. VIAF identifies the subject as 125132870. The Library of Congress control number is n80010676. Authority coordinates are 45.514, -73.438. 4 of 6 selected statements include explicit references; 3 carry qualifiers and 1 use preferred rank. The first chronological checks are 2021, 1657, 1845 and 1848.
Architectural summaries often privilege surviving fabric and can understate demolished phases, contested use or displaced communities. The lead is largely declarative, so disagreement and counter-evidence require a deliberate search beyond the opening account. Authority statements aid reconciliation but still require their own references, qualifiers and ranks to be checked.
How to read it
Treat names, boundaries and functions as historically changeable. Maps, plans, inventories and administrative records can clarify what the place meant at different dates.
- Historic place names
- Jurisdictional context
- Routes into maps and plans
Contemporary maps, plans, listed-building records, estate papers and the responsible local or national archive.
Three-step research path
- Establish the record: confirm the title “Longueuil”, its source revision and the description used here.
- Expand the search: follow Longueuil primary sources, Longueuil archive and Longueuil research across catalogues and specialist indexes.
- Test the account: compare the strongest cited source with the responsible institution’s current record and note any disagreement.
Questions for further research
- Which source most directly establishes the central claim about “Longueuil”?
- What physical evidence or contemporary plan supports the description?
- Which earlier names or jurisdictions may reveal additional records?
Search terms from this dossier
This entry incorporates text from “Longueuil” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.