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There are a number of places in the 48 contiguous United States known as tri-state areas where three states or holdings meet at one point (a tripoint), or in proximity to each other. The two most well-known are for the New York and Chicago metropolitan areas.
The Tri-State Region around New York City is where New York, New Jersey, and Connecticut meet. There is no tripoint, however, as Connecticut does not touch New Jersey. Chicago's tri-state region includes Illinois, Indiana, and Wisconsin and is commonly referred to as Chicagoland. This tri-state region also does not have a tripoint since Indiana does not touch Wisconsin.
Other large metropolitan areas with a tri-state area include Cincinnati, Memphis, Philadelphia, and Washington, D.C.
The "Joplin District" Lead-Zinc Mining region of Oklahoma, Kansas and Missouri produced mineral specimens famous throughout the world as "Tri-State" minerals.
[edit] Land tripoints
Of the 62 points where three states join, there are 38 tripoints with markers on land in the United States.[1] They are:
[edit] Water Tripoints
There are another 24 places where the tripoint is under water:
| State 1 |
State 2 |
State 3 |
Water |
Notes |
| Alabama |
Mississippi |
Tennessee |
Tennessee River |
| Arizona |
California |
Nevada |
Colorado River |
| Arkansas |
Louisiana |
Mississippi |
Mississippi River |
| Arkansas |
Mississippi |
Tennessee |
Mississippi River |
Memphis, Tennessee metro area. |
| Arkansas |
Missouri |
Tennessee |
Mississippi River |
| Arkansas |
Oklahoma |
Texas |
Red River |
| Connecticut |
New York |
Rhode Island |
Long Island Sound |
The part of New York that is in this tri-state area is Fishers Island. It is the New London, Connecticut metro area. |
| Delaware |
New Jersey |
Pennsylvania |
Delaware River |
Philadelphia, Pennsylvania metro area. |
| Idaho |
Oregon |
Washington |
Snake River |
| Illinois |
Indiana |
Kentucky |
Wabash River and Ohio River |
Evansville, Indiana metro area. |
| Illinois |
Indiana |
Michigan |
Lake Michigan |
| Illinois |
Iowa |
Missouri |
Des Moines River and Mississippi River |
| Illinois |
Iowa |
Wisconsin |
Mississippi River |
Dubuque, Iowa metro area. |
| Illinois |
Kentucky |
Missouri |
Mississippi River and Ohio River |
Little Egypt region popularly labeled as a tri-state area with St. Louis, Missouri, Marion, Illinois metro area, and Paducah, Kentucky being it's nuclei. |
| Illinois |
Michigan |
Wisconsin |
Lake Michigan |
| Iowa |
Minnesota |
Wisconsin |
Mississippi River |
La Crosse, Wisconsin metro area. |
| Iowa |
Missouri |
Nebraska |
Missouri River |
| Iowa |
Nebraska |
South Dakota |
Big Sioux River and Missouri River |
Sioux City, IA metro area. |
| Indiana |
Kentucky |
Ohio |
Great Miami River and Ohio River |
Cincinnati, Ohio metro area. |
| Kansas |
Missouri |
Nebraska |
Missouri River |
| Kentucky |
Missouri |
Tennessee |
Mississippi River |
3 separate tripoints, due to meanders of the river |
| Kentucky |
Ohio |
West Virginia |
Big Sandy River and Ohio River |
Huntington (WV)-Ashland (KY)-Ironton (OH) Tri-State region. |
| Michigan |
Minnesota |
Wisconsin |
Lake Superior |
| Ohio |
Pennsylvania |
West Virginia |
Ohio River |
[edit] Regions with no Tripoint
The following tri-state areas are also notable, but have no tripoint:
[edit] Other Tripoints
- There are 18 tripoints between 1 US state and 2 Canadian provinces or 2 US states and 1 Canadian province.
| Province 1 |
Province 2 |
State 1 |
State 2 |
Notes |
| Yukon Territory |
British Columbia |
|
Alaska |
|
| British Columbia |
|
Washington |
Idaho |
|
| British Columbia |
|
Idaho |
Montana |
|
| British Columbia |
Alberta |
|
Montana |
The Continental Divide crosses the border at this point |
| Alberta |
Saskatchewan |
|
Montana |
|
| Saskatchewan |
|
Montana |
North Dakota |
|
| Saskatchewan |
Manitoba |
|
North Dakota |
Directly north of Minot, ND |
| Manitoba |
|
North Dakota |
Minnesota |
Roughly midway between Winnipeg and Grand Forks or Fargo, ND |
| Manitoba |
Ontario |
|
Minnesota |
At the Northwest Angle, northernmost point in the Continental United States; international border diverges from 49th parallel. |
| Ontario |
|
Minnesota |
Michigan |
Michigan and Minnesota's boundaries converge in Lake Superior and thus Wisconsin does not officially border Canada; Tri-point in Lake Superior near Thunder Bay, Ontario |
| Ontario |
|
Michigan |
Ohio |
In Lake Erie, near Detroit, Toledo, Ohio, or Windsor, Ontario. |
| Ontario |
|
Ohio |
Pennsylvania |
In Lake Erie. Ohio/Pennsylvania and Ontario are on opposite shores of Lake Erie and do not share convenient border crossings. The OH/ON and PA/ON boundaries and tripoints are therefore of little practical significance. |
| Ontario |
|
Pennsylvania |
New York |
In eastern Lake Erie near Erie, PA |
| Ontario |
Quebec |
|
New York |
South of Ottawa or Cornwall, Ontario, in the St. Lawrence River |
| Quebec |
|
New York |
Vermont |
South of Montreal |
| Quebec |
|
Vermont |
New Hampshire |
|
| Quebec |
|
New Hampshire |
Maine |
|
| Quebec |
New Brunswick |
|
Maine |
|
| New Brunswick |
Nova Scotia |
|
Maine |
In the Bay of Fundy. Location is poorly defined and of very little practical significance. |
- There are 8 tripoints between 1 US state and 2 Mexican states or 2 US states and 1 Mexican state.
[edit] References
- ^ Tri State Corners in the United States. Jack Parsell.
- ^ Tri-State Peak at Cumberland Gap National Historical Park
[edit] External links
