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[[Image:NY-MA-CT_Tripoint_Marker.JPG|thumb|right|NY-MA-CT Tripoint Marker]]
[[Image:NY-MA-CT_Tripoint_Marker.JPG|thumb|right|NY-MA-CT Tripoint Marker]]

[[Image:CT-RI-MA_Tripoint.JPG|thumb|right|CT-RI-MA Tripoint Marker]]


There are 38 tripoints on land in the United States.<ref>{{cite web |url=http://www.bjbsoftware.com/corners/docs/parsell.pdf |title=Tri State Corners in the United States|publisher=Jack Parsell}}</ref> They are:
There are 38 tripoints on land in the United States.<ref>{{cite web |url=http://www.bjbsoftware.com/corners/docs/parsell.pdf |title=Tri State Corners in the United States|publisher=Jack Parsell}}</ref> They are:

Revision as of 16:38, 17 September 2006

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.

Probably the most populous, and thus most well-known, is the Tri-State Region around New York City where New York, New Jersey, and Connecticut meet. There is no tripoint, however, as Connecticut does not touch New Jersey.

Land Tripoints

File:NY-MA-CT Tripoint Marker.JPG
NY-MA-CT Tripoint Marker
File:CT-RI-MA Tripoint.JPG
CT-RI-MA Tripoint Marker

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

State 1 State 2 State 3 Notes
Oregon California Nevada Much of which would be in the proposed state of Jefferson.
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
New Mexico Oklahoma Texas
Colorado Kansas Oklahoma
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
Virginia Washington, D.C. Maryland See Baltimore-Washington Metropolitan Area
Pennsylvania Maryland Delaware See Delmarva Peninsula
New Jersey New York Pennsylvania See Tri-State Mid Atlantic Region article.
Massachusetts New York Connecticut
Vermont New York Massachusetts
Vermont New Hampshire Massachusetts
Connecticut Massachusetts Rhode Island
Four Corners Monument

The 38th point is actually a quadripoint, where 4 states meet (Utah, Colorado, Arizona, and New Mexico) at the Four Corners Monument.

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
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
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.

Tri State 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, see Chicagoland article.
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.
  • 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" (PDF). Jack Parsell.