Ecorse is a city in Wayne County in the U.S. state of Michigan. The population was 9,512 at the 2010 census. Ecorse is part of the Downriver community within Metro Detroit. The city shares a northwestern border with the city of Detroit and also borders the cities of Lincoln Park to the west, River Rouge to the north, and Wyandotte to the south. The city shares its name with the Ecorse River, which forms its southern border with Wyandotte.