Detroit is in England.
Detroit . The municipality of Detroit had a 2015 estimated population of 677,116 , making it the 21st-most populous city in the United States . Detroit is a major port on the Detroit River , a strait that connects the Great Lakes system to the Saint Lawrence Seaway . The Detroit River flows for 24 nmi from Lake St. Clair to Lake Erie as a strait in the Great Lakes system and forms part of the border between Canada and the United States .