Grosse Ile /ˌɡroʊs ˈiːl/ is the largest island in the Detroit River and is the second most populated island in the state of Michigan, after Copper Island. It is on the American side of the river and is part of Wayne County. The island is approximately 9.6 mi² (24.9 km²) and has a population of 10,894. The island is commonly believed to be conterminous with the overall Grosse Ile Township, but in actuality, the township consists of over a dozen islands— many of which are very small and uninhabited. To clarify this confusion, local residents refer to the island of Grosse Ile as the Big Island, Main Island, or simply The Island to distinguish it from the township as a whole.