The Great Lakes islands consist of about 35,000 islands in the Great Lakes, a series of interconnected freshwater lakes on the Canada–United States border. The islands were created by uneven glacial activity in the Great Lakes Basin. About 80% of the islands are located along the east side of Georgian Bay on the Canadian side of Lake Huron. These form the Thirty Thousand Islands, the world's largest freshwater archipelago. Many more islands are to the west of Georgian Bay, including Manitoulin Island, the world's largest lake island.
Largest islands The following are regarded as the ten largest islands of the Great Lakes:
Manitoulin Island, Ontario (Lake Huron) 2,770 km2 (1,068 sq mi) Isle Royale, Michigan (Lake Superior) 535 km2 (207 sq mi) St. Joseph Island, Ontario (Lake Huron) 365 km2 (141 sq mi) Drummond Island, Michigan (Lake Huron) 350 km2 (140 sq mi) St. Ignace Island, Ontario (Lake Superior) 274 km2 (106 sq mi) Michipicoten Island, Ontario (Lake Superior) 184 km2 (71 sq mi) Cockburn Island, Ontario (Lake Huron) 169 km2 (65 sq mi) Beaver Island, Michigan (Lake Michigan) 145 km2 (56 sq mi) Sugar Island, Michigan (St. Marys River) 128 km2 (49 sq mi) Wolfe Island, Ontario (Lake Ontario) 120 km2 (48 sq mi) largest of the Thousand Islands
List of notable Great Lakes islands and archipelagos Adventure Island, Wisconsin Apostle Islands Ballast Island Barker's Island Bass Islands Beaver Island, Michigan Beaver Islands, including Beaver Island and nearby islands, see Beaver Islands State Wildlife Research Area Belle Isle Bois Blanc Island, Michigan Bois Blanc Island (Ontario) Calf Island, Grosse Ile, Michigan Cana Island Caribou Island (near Michipicoten Island) Caribou Island (Thunder Bay) Catawba Island - former island presently connected to mainland Ohio Celeron Island, Gibraltar, Michigan Chambers Island, Wisconsin, in Lake Michigan's Green Bay Cockburn Island Detroit Island, Wisconsin Dickinson Island, Saint Clair River Drummond Island (contains Drummond Township, Michigan), Michigan Edmond Island - Gibraltar, Michigan Elba Island - Grosse Ile, Michigan Fawn Island, Saint Clair River Fighting Island, Detroit River Fish Island (Wisconsin) Flowerpot Island, Tobermory, Ontario Foleys Island, Luna Pier area Fox Island Fox Islands, Michigan Fox Islands (Ontario) Gard Island, Michigan–Ohio border area Grassy Island - Wyandotte, Michigan Gravel Island (Wisconsin) Green Bay Islands Green Island, Saint Clair River Green Island, Wisconsin, in Lake Michigan's Green Bay Grosse Ile, Michigan Gull Island, Wisconsin Gull Island, Michigan Gull Island, Saint Clair River Harsens Island Hat Island, Wisconsin, in Lake Michigan's Green Bay Hickory Island, Grosse Ile, Michigan Hog Island (Wisconsin) Horse Island, city of Gibraltar in the state of Michigan, in the Detroit River Horseshoe Island, Wisconsin, in Lake Michigan's Green Bay Howe Island Ile Parisienne Indian Island, Michigan-Ohio border area Isle Royale, Michigan Johnson's Island Kelleys Island Mackinac Island, Michigan Madeline Island Manitou Islands, Michigan: North Manitou Island South Manitou Island Manitoulin Island McDonald Island, Saint Clair River Meso Island, Grosse Ile, Michigan Michipicoten Island Middle Island, Saint Clair River Neebish Island, Michigan North Island, Saint Clair River Parry Island Pelee Island Pilot Island, Wisconsin Plum Island (Wisconsin) Potawatomi Islands on the eastern side of Lake Michigan's Green Bay Washington Island, Wisconsin; largest of the Potawatomi Islands Rattlesnake Island Rock Island (Wisconsin) Saint Ignace Island Saint Joseph Island, Ontario Sister Islands in Lake Michigan's Green Bay Slate Islands, Ontario South Bass Island Spider Island (Wisconsin) Strawberry Island, Saint Clair River Strawberry Islands in Lake Michigan's Green Bay Sugar Island, Michigan Sugar Island, Ohio Swan Island, Grosse Ile, Michigan Thirty Thousand Islands archipelago Toronto Islands Walpole Island Wolfe Island, Ontario
See also
List of populated islands of the Great Lakes List of Lake Erie Islands List of islands of Michigan List of islands of Ontario Thousand Islands
References


