The East North Central states is a region of the United States defined by the U.S. Census Bureau, containing five states: Illinois, Indiana, Michigan, Ohio and Wisconsin. These states border the Great Lakes, West North Central, the Southeastern, and Northeastern states; the Eastern North Central states also share a land border with Canada through Michigan's Upper Peninsula, southeastern, and mid-Michigan regions. As one of two subregional divisions used to categorize the Midwestern United States, East North Central closely matches the area of the Northwest Territory, excluding a portion of Minnesota.
The East North Central states also form a large part of the Great Lakes region, although the latter also includes Minnesota, New York, Pennsylvania and the Canadian province of Ontario. It has a low rate of population growth and the estimated population as of 2019 was 46,902,431, though the 2020 census numbered 47,368,533 residents. The Great Lakes bordering the area provide access to the Atlantic Ocean via the Great Lakes Waterway and St. Lawrence Seaway, or by the Erie Canal and the Hudson River, or via the Gulf of Mexico from the Mississippi River and the Illinois Waterway. Chicago and Detroit—two of East North Central's largest cities—are among the major ports of the United States.