De Tour Village is a village in Chippewa County in the U.S. state of Michigan. The population was 421 at the 2000 census. The village is at the extreme eastern tip of the Upper Peninsula of Michigan, in Detour Township, at the turning point for the shipping channel connecting the St. Mary's River with Lake Huron and the Straits of Mackinac. Drummond Island, one of the largest islands in the St. Mary's River, is only one mile across the river from De Tour. The De Tour Reef Light is nearby. The village was originally named Warrenville in 1848 after Ebenezer Warren, the first postmaster in the township. The name was changed to De Tour on July 25, 1856, when a new postmaster, Henry A. Williams, assumed office. De Tour was incorporated as De Tour Village in 1961 (the word "Village" is a part of the village's name). M-134 runs through the village, connecting with I-75 43 miles to the west and with M-129 25 miles to the west, which runs north 37 miles to Sault Ste. Marie. M-134 also continues east to Drummond Island via the Drummond Island Ferry.