Michigan Borders: States, Map & Complete Guide
Fact-checked • Updated January 23, 2026
Michigan borders three U.S. states by land: Wisconsin to the west, and Indiana and Ohio to the south. The state also shares an international border with Ontario, Canada. Across the Great Lakes, Michigan also faces Illinois (across Lake Michigan) and Minnesota (across Lake Superior) by water. Michigan is the only state that borders four of the five Great Lakes: Superior, Michigan, Huron, and Erie.
Michigan Border Map
Map showing Michigan's 3 land-border states, 2 water-border states across the Great Lakes, and Ontario (Canada).
Border Details
Explore each of Michigan's borders in detail. Click any card to learn more.
Wisconsin
Wisconsin borders Michigan by land in the Upper Peninsula and also across Lake Michigan by water.
Indiana
Indiana borders Michigan by land along the southern edge of the Lower Peninsula and also across Lake Michigan by water.
Ohio
Ohio borders Michigan by land to the south and also across Lake Erie by water.
Illinois
Illinois does not share a land border with Michigan, but the two states face each other across Lake Michigan (water border only).
Minnesota
Minnesota does not share a land border with Michigan, but the two states face each other across Lake Superior (water border only).
Ontario
Ontario borders Michigan across multiple rivers and lakes.
Great Lakes
Michigan borders four of the five Great Lakes: Superior, Michigan, Huron, and Erie.
Michigan's Two Peninsulas
Michigan is the only U.S. state divided into two large peninsulas separated by water. The Lower Peninsula is shaped like a mitten and contains most of Michigan's population. The Upper Peninsula (often called the U.P.) extends westward from the Lower Peninsula and is connected by the Mackinac Bridge. The Straits of Mackinac separate the two peninsulas and connect Lake Michigan to Lake Huron. This unique geography means Michigan has borders in multiple disconnected regions.
Which States Border Michigan?
Michigan shares land borders with three U.S. states: Wisconsin to the west, and Indiana and Ohio to the south. In addition, Michigan shares water borders across the Great Lakes with Illinois (across Lake Michigan) and Minnesota (across Lake Superior).
West: Wisconsin
Wisconsin and Michigan share both a land border in the Upper Peninsula and a water border across Lake Michigan. The land border runs through the Upper Peninsula, while the water border divides Lake Michigan between the two states.
The Michigan-Wisconsin land border in the Upper Peninsula extends for about 120 miles from Lake Superior in the north to Lake Michigan in the south. The border runs roughly north-south through the Menominee River and other waterways. Michigan counties along this border include Gogebic, Iron, Dickinson, and Menominee. The water border through Lake Michigan separates the states' respective shorelines.
- About 120 miles of land border in Upper Peninsula
- Water border through Lake Michigan
- Michigan counties: Gogebic, Iron, Dickinson, Menominee
South: Indiana
Indiana and Michigan are separated by a border located on Michigan's southern edge in the Lower Peninsula. The boundary includes both a land border and a water border in Lake Michigan.
The Michigan-Indiana border extends for about 120 miles total on land. The border runs roughly east-west across southern Michigan. Michigan counties along this border include Berrien, Cass, St. Joseph, Branch, and Hillsdale. On the Indiana side, LaPorte, St. Joseph, Elkhart, Steuben, and others sit along the border. Major cities near this border include South Bend, Indiana.
- About 120 miles of land border
- Also includes Lake Michigan water border
- Michigan counties: Berrien, Cass, St. Joseph, Branch, Hillsdale
South: Ohio
Ohio and Michigan are separated by a border located on Michigan's southern and southeastern edges in the Lower Peninsula. The boundary includes both a land border and a water border in Lake Erie.
The Michigan-Ohio land border extends for about 60 miles. The border runs roughly east-west across the southern tip of Michigan. Michigan counties along this border include Hillsdale, Lenawee, and Monroe. The water border in Lake Erie separates the states' respective lake areas. Toledo, Ohio sits near this border.
- About 60 miles of land border
- Water border in Lake Erie
- Michigan counties: Hillsdale, Lenawee, Monroe
Water Border: Illinois (Lake Michigan)
Illinois and Michigan do not share a land border, but they do face each other across Lake Michigan. This is a water-only border created by the Great Lakes.
The Lake Michigan water border connects Michigan's Lower Peninsula shoreline with Illinois' northeastern shoreline near the Chicago area.
- Water border only through Lake Michigan
- No land border between states
- Michigan faces northeastern Illinois across the lake
Water Border: Minnesota (Lake Superior)
Minnesota and Michigan do not share a land border, but they do face each other across Lake Superior. This is a water-only relationship created by the Great Lakes.
Across the western portion of Lake Superior, parts of Michigan's Upper Peninsula face Minnesota. Isle Royale, a Michigan island in Lake Superior, sits closer to Minnesota than to Michigan's mainland.
- Water border only through Lake Superior
- No land border between states
- Isle Royale sits closer to Minnesota
International Border with Ontario, Canada
Michigan shares extensive water borders with Ontario, Canada across multiple rivers and lakes. This international border runs through the St. Marys River, Lake Huron, St. Clair River, Lake St. Clair, Detroit River, and Lake Erie.
North & East: Ontario, Canada
Ontario and Michigan are separated by water borders that run through several connected waterways. The border stretches from Lake Superior in the west to Lake Erie in the southeast, following the Great Lakes and connecting rivers.
The Michigan-Ontario border extends for approximately 720 miles through various water bodies. The border includes the St. Marys River (connecting Lake Superior to Lake Huron), the waters of Lake Huron, the St. Clair River, Lake St. Clair, the Detroit River, and western Lake Erie. Major cities on this border include Detroit, Michigan and Windsor, Ontario (connected by bridges and a tunnel), Sault Ste. Marie on both sides, and Port Huron, Michigan.
- About 720 miles of water borders
- Through multiple rivers and lakes
- Major crossings: Detroit-Windsor, Sault Ste. Marie, Port Huron
Four Great Lakes Border Michigan
Michigan is the only U.S. state that borders four of the five Great Lakes: Superior, Michigan, Huron, and Erie. This gives Michigan more Great Lakes coastline than any other state—approximately 3,288 miles of shoreline. The Great Lakes define Michigan's geography and have shaped its economy, culture, and history.
Across the Great Lakes, Michigan also faces Illinois (Lake Michigan) and Minnesota (Lake Superior) by water, even though it does not share land borders with either state.
Michigan's Great Lakes Borders
Lake Superior borders Michigan's Upper Peninsula to the north. Lake Michigan borders the western side of the Lower Peninsula and southern Upper Peninsula. Lake Huron borders the eastern side of the Lower Peninsula and southern Upper Peninsula. Lake Erie borders the southeastern corner of the Lower Peninsula.
- Lake Superior: northern Upper Peninsula
- Lake Michigan: western Lower and southern Upper Peninsula
- Lake Huron: eastern Lower and southern Upper Peninsula
- Lake Erie: southeastern Lower Peninsula
More Coastline Than Any Other State Except Alaska
Michigan has approximately 3,288 miles of Great Lakes shoreline, more than any other state except Alaska (which has ocean coastline). No point in Michigan is more than 85 miles from one of the Great Lakes. This extensive coastline has made Michigan a major shipping, fishing, and tourism center. The state's maritime character is central to its identity, and Michigan has more lighthouses than any other U.S. state—over 120 historic lighthouses along its shores.
Key Facts & Statistics
This table shows every border Michigan shares, organized by direction and type.
Michigan borders exactly three U.S. states by land
Frequently Asked Questions
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Lake Michigan borders what states?
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Sources & References
This article has been researched using authoritative sources to ensure accuracy and reliability.
Great Lakes coastline data