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

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

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:

Tri State 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.

References