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, where 4 states meet ( Utah , Colorado , Arizona , and New Mexico ) at the Four Corners Monument .]]

There are a number of places in the United States known as tri-state areas where three State s 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.


LAND TRIPOINTS


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


WATER TRIPOINTS


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


REGIONS WITH NO TRIPOINT


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


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.



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