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Isle aux Grues

Isle aux Grues is an inhabited island in the Saint Lawrence River in Quebec, Canada, and the only island in the Isle-aux-Grues archipelago with permanent year-round residents.

By Ethan Anderson| Reviewed by Olivia Bennett, Standards & Fact-Checking Lead| Updated July 26, 2026|2 min read| Fact-checked

Isle aux Grues is an inhabited island in the Saint Lawrence River in Quebec, Canada, and the only island in the Isle-aux-Grues archipelago with permanent year-round residents. It is part of the municipality of Saint-Antoine-de-l'Isle-aux-Grues in the Montmagny Regional County Municipality, in Chaudière-Appalaches. The island is known for its marshes, birdlife, agriculture, and seasonal access by ferry and aircraft.

Geography

Isle aux Grues is a river island in the Saint Lawrence, in Chaudière-Appalaches, Quebec. It is the largest and only permanently inhabited island in the Isle-aux-Grues archipelago, which contains 21 islands and islets.

Population and settlement

The island has been inhabited since the 17th century and has a small permanent population of roughly 240 to 250 people. The municipality of Saint-Antoine-de-l'Isle-aux-Grues includes most of the archipelago, but the year-round community is on Isle aux Grues itself.

Access and transportation

The island is accessed by ferry in the warmer months and by aircraft, with winter access affected by ice conditions. Local travel is typically on foot or by bicycle.

Environment and wildlife

The island is known for wetlands, mudflats, and important bird habitat, especially for waterfowl and migratory birds. Its marshes are among the largest remaining insular high marshes along the Saint Lawrence River.

Economy and tourism

Agriculture is central to the island's land use, alongside a modest tourism sector. Visitors are drawn by scenery, birdwatching, local food products, and outdoor recreation.

Key facts

  • Isle aux Grues is the only permanently inhabited island in its 21-island archipelago.
  • The island lies in the lower Saint Lawrence River, opposite Montmagny.
  • Its name is associated with historical references to large wading birds or cranes/herons.
  • Bird habitat and wetlands are a major ecological feature of the island.
  • Agriculture remains an important part of the island's landscape and local economy.
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Canadian context

Isle aux Grues is a Quebec island with importance to Canadian geography, wetland conservation, migratory birds, and rural island communities in the lower Saint Lawrence estuary.

Frequently asked questions

Where is Isle aux Grues located?
It is in the Saint Lawrence River in Quebec, opposite Montmagny, within the Chaudière-Appalaches region.
Is Isle aux Grues inhabited year-round?
Yes. It is the only island in the archipelago with a permanent year-round population.
How many islands are in the Isle-aux-Grues archipelago?
The archipelago contains 21 islands and islets.
How do people get to Isle aux Grues?
Access is by ferry and by aircraft, with ferry service depending on tides and seasonal conditions.
What is the island known for?
It is known for wetlands, bird habitat, agriculture, and its small historic rural community.
What does the name mean?
The name is French and is commonly rendered as "island of cranes," though historical references in the area also relate it to large herons.

References

  1. Wikipediahttps://en.wikipedia.org/wiki/Isle-aux-Grues
    Supports: Location in Quebec, Saint Lawrence River, and role as an island in the archipelago.
  2. Wikipediahttps://fr.wikipedia.org/wiki/Archipel_de_L'Isle-aux-Grues
    Supports: Archipelago size of 21 islands.
  3. Commission de toponymie du Québechttps://toponymie.gouv.qc.ca/ct/ToposWeb/Fiche.aspx?no_seq=27312
    Supports: Municipal and toponymic information, permanence of habitation, and name origin reference.
  4. IBA Canadahttps://www.ibacanada.org/mobile/site.jsp?siteID=QC103
    Supports: Island dimensions, habitat description, population estimate, and bird significance.
  5. Nature Conservancy of Canadahttps://www.natureconservancy.ca/fr/nous-trouver/quebec/projets-vedettes/chaudiere-appalaches/histoire-iag.html
    Supports: Archipelago context, island size, and access by ferry.