TopClassified heritage building (Québec) · 1800–1825Maison Sauvageau-Sweeny422 boulevard SalaberryPhoto: Benoit Rochon · CC BY-SA 3.0 · Commons file
Maison Sauvageau-Sweeny · Photo: Benoit Rochon · CC BY-SA 3.01historic place on the registers
History of Mercier · Canada’s heritage registers
One place in Mercier, at the top of the registers
Mercier’s one place is Maison Sauvageau-Sweeny, a classified heritage building (québec) begun in 1800. The municipality’s date on Wikidata is July 1, 1855: a founding, an incorporation or an amalgamation, the record doesn’t say which. Per resident Mercier has more than 76% of Canadian towns: 0.6 for every 10,000 people. Its housing is mostly newer: 8% predates 1961, where the typical town has 18%.
Historic places
1
0.6 per 10,000 residents
Highest designations
1
National Historic Sites, classified federal buildings and Québec’s classements
Oldest building
1800
the first construction date on its record
Homes built before 1961
8%
typical town: 18%
The map
Where Mercier’s history is
Every place on the registers inside the town, by its designation.
Highest designations
Hover a dot for its name; tap one to open its page.
The 1, by tier
1 Highest designations
In Québec the record is fuller than elsewhere: beside Parks Canada’s designations, the province’s register lists its classements and every municipal citation.
Points from Wikidata (Parks Canada’s files carry none) and from Québec’s register, as mapped there.
Highest designations
One place in Mercier with the highest designation
National Historic Sites and Classified Federal Heritage Buildings, Canada’s highest federal recognition. Each one opens its own page.
Around the town
3 places of the highest rank within 10 km of Mercier
They are spread over 3 towns, including Châteauguay, Saint-Rémi and Sainte-Martine. The radius of 10 km holds 4. Nearest comes Saint-Joachim Church, 5 km off, in Châteauguay.
The 4 nearest, within 10 km
| Saint-Joachim ChurchNational Historic Site · 1774–1798 · 5 km away, in Châteauguay |
| Maison LePailleurMunicipal citation (Québec) · 1792 · 5.2 km away, in Châteauguay |
| Calvaire du cordonClassified heritage building (Québec) · 1838 · 8.7 km away, in Saint-Rémi |
| Maison Pierre-RousselleClassified heritage building (Québec) · 1823 · 9.2 km away, in Sainte-Martine |
Homes by age
Mercier is still building: 12% of homes date from 2016 to 2021, against 4.1%
Count back from today and half of Mercier’s homes are older than 2001. 29% of Mercier’s homes were built from 2001 to 2015, more than the typical town’s 15%. Building from 1961 to 1980 gave Mercier 25% of its homes, near the usual 27%.
8%
Before 1961
25%
1961–80
27%
1981–2000
29%
2001–15
12%
2016–21
MercierTypical town
2021 Census, private dwellings by period of construction (Statistics Canada); the typical town is the middle Canadian town of 2,500 or more.
Born here
Mercier’s 3 natives of the years before 1914
Fame, by Wikipedia: Paul-Étienne Grandbois first, in 3 languages. The latest, Côme-Séraphin Cherrier, was born in 1848. Édouard Laberge comes first, born in 1829. Côme-Séraphin Cherrier lived longest, to 64, dying in 1912.
Édouard Laberge
Paul-Étienne Grandbois
Côme-Séraphin Cherrier
1800182518501875190019251950
PG
Paul-Étienne Grandbois1846–1907 · Canadian politician
Côme-Séraphin Cherrier1848–1912 · Canadian politician
ÉL
Édouard Laberge1829–1883 · Canadian politician
Everyone born in Mercier → Born before 1914 (the page’s periods: Confederation to the First World War). Birthplaces from Wikidata, each checked against the person’s Wikipedia article.
Towns its size
Mercier has the 4th most of 16 towns its size
Towns of 15,900 to 16,200 residents, by places on the registers.
Mercier1
Ahead of it: Sainte-Anne-des-Plaines, Almonte and Vieux-Moulin. The middle one has 0. 9 of them have none.
Neighbours
Mercier and its neighbours
| Town | People | Places | Highest | Oldest |
|---|---|---|---|---|
| Mercier | 16,036 | 1 | 1 | 1800 |
| Châteauguay | 53,508 | 2 | 1 | 1774 |
| Saint-Isidore | 2,889 | 0 | 0 | — |
| Léry | 2,817 | 0 | 0 | — |
| Sainte-Martine | 5,884 | 1 | 1 | 1823 |
| Kahnawake | 11,142 | 3 | 3 | 1716 |
| Saint-Urbain-Premier | 1,380 | 0 | 0 | — |
In brief
Mercier in brief
Mercier holds 1 historic place on Canada’s registers, one with the highest designation, including Maison Sauvageau-Sweeny. Only 3 of the 16 towns nearest its size have more historic places. Its history in lives: Paul-Étienne Grandbois (1846), Côme-Séraphin Cherrier (1848) and Édouard Laberge (1829). Its homes are mostly newer: 8% were built before 1961, against 18% in the typical town. Beyond that, its designation dates from 1974.
How to read these numbers
What this data can and can’t tell you
- Protection. Québec’s classements and citations carry legal protection: work on a classified building needs the minister’s authorization, on a cited one the municipality’s. Federal designations commemorate.
- People and events. The open directory puts its national historic persons nowhere, so a town shows one only on firm ground: a birth there, matched by name and life years, or a historic place there named for the person whose record says so. Events are left out.
- Québec’s register. In Québec the ministry of culture publishes its register openly: provincial classements, declared sites and the municipalities’ citations all appear, with their descriptions.
- The federal register. Parks Canada’s Directory of Federal Heritage Designations lists every National Historic Site, federal heritage building, heritage railway station and lighthouse; the Canadian Register of Historic Places adds their statements in English and French.
- The tiers. National Historic Sites and the most protected buildings form the top tier; recognized federal buildings, stations and lighthouses the second; provincial and municipal listings the third.
- The grade. History isn’t one of Canada’s graded pillars, so this page describes and compares without a letter.
Questions about Mercier’s history
Which places in Mercier have the highest designation?
Maison Sauvageau-Sweeny.
What is the oldest building in Mercier?
Maison Sauvageau-Sweeny (Classified heritage building (Québec)): the first construction date on its record is 1800.
How old are the homes in Mercier?
8% predate 1961, where the typical town has 18%.
Contains information licensed under the Open Government Licence – Canada (Parks Canada). Québec register data: Ministère de la Culture et des Communications du Québec, CC BY 4.0.
Sources: Parks Canada, Directory of Federal Heritage Designations · Canadian Register of Historic Places (federal extract) · Répertoire du patrimoine culturel du Québec (MCC, Données Québec) · Wikidata (CC0) for map points, other names and articles · Statistics Canada, 2021 Census (homes by period of construction). Under the Statistics Canada Open Licence.
Adapted from Statistics Canada (Census of Population 2021, population estimates 2025, 2021 census boundaries) under the Statistics Canada Open Licence; this does not constitute an endorsement by Statistics Canada. Neighbourhood names in some cities © OpenStreetMap contributors (ODbL).