Canadian Island Superlatives


Largest island

The largest island of Canada is Baffin Island, at 195,928 sq mi / 507,541 sq km.  It is the 5th largest island in the world.


See also the 38 largest islands of Canada.


Largest lake island

The largest lake island in Canada Manitoulin Island, in Lake Huron, Ontario, at 1,068 sq mi / 2,766 sq km.


See largest lake islands for the top 20 lake islands in the world.


Largest river island

The largest Canadian river island is Montreal Island, Quebec, a 201 sq mi / 521 sq km island in the St. Lawrence River.


Largest river-lake island

The largest island formed by both lakes and rivers in Canada is Ross Island, which is about 600 sq mi / 1,500 sq km.  It is surrounded by the Nelson River, Playgreen Lake, and other bodies of water in central Manitoba.


Largest island on an island

The largest island on an island in Canada is Glover Island, in Grand Lake, Newfoundland, at 74 sq mi / 192 sq km.  It is also the 18th largest lake island in the world.


Largest island on an island on an island

The largest island on an island on an island in Canada is a 4 acre / 1.6 ha island in a lake on an island in a lake in south-central Victoria Island, Nunavut, at 69.7928° north, 108.2411° west.




About 4.0 million Canadians are islanders.  This is about 1 in every 8 Canadians, or 12%.  Some 45% of Canadian islanders live on Île Montreal, Quebec.


Most populous island

The most populous island in Canada is Montreal Island, Quebec, with 1.8 million inhabitants in the city of Montreal and other communities.


Most populous lake island

The most populous Canadian lake island is Manitoulin Island, in Lake Huron, Ontario. It was home to around 13,000 people as of 2006.


Largest uninhabited

Canada’s largest uninhabited island is Devon Island, in the Arctic, at 21,331 square miles 55,247 square kilometers.  It is the largest uninhabited island in the world, but does sometimes host teams of researchers.


Least densely populated

The least densely populated inhabited Canadian island is Ellesmere, in Nunavut, , with about 153 people on an island of 75,767 sq miles / 196,236 sq km.  Each inhabitant thus has 495 sq miles / 1,283 sq km apiece..




Tallest island

The tallest Canadian island is Ellesmere Island; its Barbeau Peak rises 8,583 feet / 2,616 meters from sea level, also making it the tallest point in Nunavut.


Tallest lake island

Teresa Island, in Atlin Lake, British Columbia, is the tallest Canadian lake island, rising 4,563 feet / 1,391 meters above lake level.



The largest Canadian island connected to the mainland by a fixed link is Cape Breton Island, Nova Scotia, at 3,981 sq miles / 10,311 sq km.  It is linked to the mainland by a bridge and causeway combination.


Most common name

The most common name for islands in Canada is "Green Island”; 133 Canadian islands share that name.


Smallest divided by borders

The smallest island shared by Canada with another country is the west island in Boundary Lake, Manitoba, at about 3 acres / 1.1 ha.  It is shared with the United States.


See also islands divided by international borders.


Lowest island

Canada has no islands below sea level, so thousands of islands share the lowest elevation.



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Contact Joshua Calder at jcalder[at] with questions or suggestions. 

© 1995-2007 Joshua Calder

Canadian island superlatives, island records, biggest island / divided island / highest island / highest population / lake islands / largest Canadian island/ Canadian geography / geographic superlatives island / geographic superlatives



Canadian geography / island geography / biggest island / Canadian superlatives / Canadian islands