TRI-STATE AREA

There are a number of places in the 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 know as "Tri-State" minerals.

Contents

Land tripoints

Water Tripoints

Regions with no Tripoint

Other Tripoints

References

External links

Land tripoints

There are 38 tripoints on land in the United States.^[1] They are:

State 1	State 2	State 3	Notes
Oregon	California	Nevada
Oregon	Idaho	Nevada
Idaho	Nevada	Utah
Nevada	Utah	Arizona
Montana	Idaho	Wyoming	Located within Yellowstone National Park.
Idaho	Utah	Wyoming
Wyoming	Utah	Colorado
Montana	North Dakota	South Dakota
Montana	Wyoming	South Dakota
Wyoming	South Dakota	Nebraska
Wyoming	Nebraska	Colorado
Colorado	Nebraska	Kansas
Colorado	New Mexico	Oklahoma	Preston Monument
New Mexico	Oklahoma	Texas	Texomex Marker
Colorado	Kansas	Oklahoma	8 Mile Corner
North Dakota	South Dakota	Minnesota
South Dakota	Minnesota	Iowa
Kansas	Oklahoma	Missouri
Oklahoma	Missouri	Arkansas
Texas	Arkansas	Louisiana	See Ark-La-Tex.
Indiana	Michigan	Ohio
Tennessee	Alabama	Georgia
Alabama	Florida	Georgia
Tennessee	North Carolina	Georgia
North Carolina	Georgia	South Carolina
Kentucky	Virginia	Tennessee	Located within Cumberland Gap National Historical Park.
Tennessee	Virginia	North Carolina
Kentucky	Virginia	West Virginia
Pennsylvania	West Virginia	Maryland
Maryland	West Virginia	Virginia	Within Harpers Ferry National Historical Park
Virginia	Washington, D.C.	Maryland	See Washington Metropolitan Area. There are 2 tripoints where these three holdings meet.
Pennsylvania	Maryland	Delaware	See Mason-Dixon line.
New Jersey	New York	Pennsylvania	See Port Jervis, New York.
Massachusetts	New York	Connecticut	See The Berkshires.
Vermont	New York	Massachusetts
Vermont	New Hampshire	Massachusetts
Connecticut	Massachusetts	Rhode Island	See Thompson, Connecticut.
The Four Corners

Water Tripoints

There are another 24 places where the tripoint is under water:

State 1	State 2	State 3	Water	Notes
Washington	Oregon	Idaho	Snake River
California	Nevada	Arizona	Colorado River
South Dakota	Nebraska	Iowa	Big Sioux River and Missouri River
Nebraska	Iowa	Missouri	Missouri River
Nebraska	Kansas	Missouri	Missouri River
Oklahoma	Arkansas	Texas	Red River
Minnesota	Wisconsin	Michigan	Lake Superior
Minnesota	Iowa	Wisconsin	Mississippi River	La Crosse, Wisconsin metro area.
Iowa	Wisconsin	Illinois	Mississippi River	Dubuque, Iowa metro area.
Iowa	Missouri	Illinois	Des Moines River and Mississippi River
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.
Missouri	Kentucky	Tennessee	Mississippi River	3 separate tripoints, due to meanders of the river
Missouri	Arkansas	Tennessee	Mississippi River
Arkansas	Tennessee	Mississippi	Mississippi River	Memphis, Tennessee metro area.
Arkansas	Louisiana	Mississippi	Mississippi River
Tennessee	Mississippi	Alabama	Tennessee River
Wisconsin	Illinois	Michigan	Lake Michigan
Illinois	Michigan	Indiana	Lake Michigan
Illinois	Indiana	Kentucky	Wabash River and Ohio River	Evansville, Indiana metro area.
Indiana	Ohio	Kentucky	Great Miami River and Ohio River	Cincinnati, Ohio metro area.
Ohio	Kentucky	West Virginia	Big Sandy River and Ohio River	Huntington (WV)-Ashland (KY)-Ironton (OH) Tri-State region.
Ohio	West Virginia	Pennsylvania	Ohio River
Pennsylvania	Delaware	New Jersey	Delaware River	Philadelphia, Pennsylvania metro area.
Connecticut	Rhode Island	New York	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.

Regions with no Tripoint

The following tri-state areas are also notable, but have no tripoint:

State 1	State 2	State 3	Notes
Alabama	Mississippi	Florida	The Gulf Coast region.
Connecticut	New York	New Jersey	New York metro area. See Tri-State Region article.
Illinois	Indiana	Wisconsin	Chicago metro area
Kansas	Oklahoma	Texas	The Liberal, Kansas area has a close relationship with the Oklahoma and Texas panhandles.
Massachusetts	Maine	New Hampshire	The Boston to Portland metro area.

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.

References

1. Tri State Corners in the United States

External links

★ Tripoint Guide