# List of tripoints of U.S. states

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This is a list of all tripoints in which the boundaries of three (and only three) U.S. states converge at a single geographic point. Of the 60 such points, 36 are on dry land and 24 are in water. Of the points in water, 3 are in the Great Lakes and thus have no land nearby. A tripoint occurring in a populated area may also be informally described as a tri-state area.

## Land

* Connecticut–Massachusetts–New York tripoint marker
* Connecticut–Rhode Island–Massachusetts tripoint marker
* New Jersey–New York–Pennsylvania tripoint marker
* Delaware–Maryland–Pennsylvania tripoint marker
* Indiana–Michigan–Ohio tripoint marker
* Colorado–Kansas–Oklahoma tripoint marker (8 Mile Corner)
* Kansas-Missouri-Oklahoma tripoint marker
| State 1 | State 2 | State 3 | Coordinates | Notes |
| Alabama | Florida | Georgia | 31°0′2″N 85°0′8″W﻿ / ﻿31.00056°N 85.00222°W﻿ / 31.00056; -85.00222 | Marker on Chattahoochee riverbank is actually a few feet above and west of true tripoint at high-water line. |
| Alabama | Georgia | Tennessee | 34°59′5″N 85°36′19″W﻿ / ﻿34.98472°N 85.60528°W﻿ / 34.98472; -85.60528 | Tri-State Corner. Marker on dry land at surface level and unmarked on lake in cavern directly below. Stolen in 2009 and returned two years later. |
| Arizona | Nevada | Utah | 37°0′1″N 114°3′2″W﻿ / ﻿37.00028°N 114.05056°W﻿ / 37.00028; -114.05056 | Marked with a red sandstone monument. |
| Arkansas | Louisiana | Mississippi | 33°0′15″N 91°9′58″W﻿ / ﻿33.00417°N 91.16611°W﻿ / 33.00417; -91.16611 | Probably unmarked on silt island in river sometimes connected to west bank by mud flat accreted by riprap. |
| Arkansas | Louisiana | Texas | 33°1′9″N 94°2′35″W﻿ / ﻿33.01917°N 94.04306°W﻿ / 33.01917; -94.04306 | See Ark-La-Tex. Marker in process of being surrounded and absorbed by tree. |
| Arkansas | Missouri | Oklahoma | 36°29′58″N 94°37′5″W﻿ / ﻿36.49944°N 94.61806°W﻿ / 36.49944; -94.61806 | Marked with a stone monument. |
| Arkansas | Oklahoma | Texas | 33°38′16″N 94°29′9″W﻿ / ﻿33.63778°N 94.48583°W﻿ / 33.63778; -94.48583 | Unmarked on seasonal silt island or in river bed, but Oklahoma–Texas state line as revised in 2000 is defective in not extending from vegetation line on south bank to pre-established tripoint. |
| California | Nevada | Oregon | 41°59′40″N 119°59′57″W﻿ / ﻿41.99444°N 119.99917°W﻿ / 41.99444; -119.99917 | Marked with a cairn. |
| Colorado | Kansas | Nebraska | 40°0′11″N 102°3′6″W﻿ / ﻿40.00306°N 102.05167°W﻿ / 40.00306; -102.05167 | Marked with a brass disc. |
| Colorado | Kansas | Oklahoma | 36°59′35″N 102°2′32″W﻿ / ﻿36.99306°N 102.04222°W﻿ / 36.99306; -102.04222 | 8 Mile Corner. Marker is concealed in crypt beneath removable manhole cover. |
| Colorado | Nebraska | Wyoming | 41°0′5″N 104°3′12″W﻿ / ﻿41.00139°N 104.05333°W﻿ / 41.00139; -104.05333 | Marked with a stone surrounded by a three-stone colored base. |
| Colorado | New Mexico | Oklahoma | 37°0′0″N 103°0′8″W﻿ / ﻿37.00000°N 103.00222°W﻿ / 37.00000; -103.00222 | Preston Monument |
| Colorado | Utah | Wyoming | 41°0′2″N 109°3′0″W﻿ / ﻿41.00056°N 109.05000°W﻿ / 41.00056; -109.05000 | Marked. |
| Connecticut | Massachusetts | New York | 42°2′59″N 73°29′14″W﻿ / ﻿42.04972°N 73.48722°W﻿ / 42.04972; -73.48722 | See Brace Mountain or Mount Frissell. Marked with a stone inscribed with MASS-1898-NY and a scratched-on CONN. |
| Connecticut | Massachusetts | Rhode Island | 42°0′29″N 71°47′57″W﻿ / ﻿42.00806°N 71.79917°W﻿ / 42.00806; -71.79917 | See Thompson, Connecticut. Marked with a stone inscribed with MASS-CONN-RI. |
| Delaware | Maryland | Pennsylvania | 39°43′20″N 75°47′19″W﻿ / ﻿39.72222°N 75.78861°W﻿ / 39.72222; -75.78861 | Marked by the Tri-State Monument, inscribed with M-M-P-P. See Delaware Wedge. |
| Georgia | North Carolina | Tennessee | 34°59′18″N 84°19′19″W﻿ / ﻿34.98833°N 84.32194°W﻿ / 34.98833; -84.32194 | Marked. |
| Idaho | Montana | Wyoming | 44°28′27″N 111°2′56″W﻿ / ﻿44.47417°N 111.04889°W﻿ / 44.47417; -111.04889 | Located within Yellowstone National Park. Marked, although difficult to access. |
| Idaho | Nevada | Oregon | 42°0′1″N 117°1′34″W﻿ / ﻿42.00028°N 117.02611°W﻿ / 42.00028; -117.02611 | Marked with a three-sided stone inscribed with N-I-O on the respective faces. |
| Idaho | Nevada | Utah | 41°59′37″N 114°2′30″W﻿ / ﻿41.99361°N 114.04167°W﻿ / 41.99361; -114.04167 | Marked with a granite monument inscribed with the respective states' names. |
| Idaho | Utah | Wyoming | 42°0′6″N 111°2′48″W﻿ / ﻿42.00167°N 111.04667°W﻿ / 42.00167; -111.04667 | Marked with a stone. |
| Indiana | Michigan | Ohio | 41°41′46″N 84°48′22″W﻿ / ﻿41.69611°N 84.80611°W﻿ / 41.69611; -84.80611 | Brass marker with the shapes of the three states is located in a monument box beneath the surface of a rural road. Was set in 1999 and is referenced by a granite marker 20 feet to the east on the Michigan-Ohio line. |
| Iowa | Minnesota | South Dakota | 43°30′1″N 96°27′12″W﻿ / ﻿43.50028°N 96.45333°W﻿ / 43.50028; -96.45333 | True point is marked with a disc in the center of a T-shaped road intersection. A witness monument nearby in the South Dakota corner acknowledges the tri-point being set in 1859. |
| Kansas | Missouri | Oklahoma | 36°59′56″N 94°37′5″W﻿ / ﻿36.99889°N 94.61806°W﻿ / 36.99889; -94.61806 | Marked with a plaque on a seldom used dead-end road. |
| Kentucky | Tennessee | Virginia | 36°36′3″N 83°40′32″W﻿ / ﻿36.60083°N 83.67556°W﻿ / 36.60083; -83.67556 | Tri-State Peak Located within Cumberland Gap National Historical Park. Marked. |
| Kentucky | Virginia | West Virginia | 37°32′17″N 81°58′5″W﻿ / ﻿37.53806°N 81.96806°W﻿ / 37.53806; -81.96806 | Marked with a USCG marker on top of a two-foot high iron pipe at the river's high point. |
| Maryland | Pennsylvania | West Virginia | 39°43′16″N 79°28′36″W﻿ / ﻿39.72111°N 79.47667°W﻿ / 39.72111; -79.47667 | Marked with a pyramid-like stone. |
| Massachusetts | New Hampshire | Vermont | 42°43′37″N 72°27′30″W﻿ / ﻿42.72694°N 72.45833°W﻿ / 42.72694; -72.45833 | Marker is technically on dry land, but buried within river bed due to a dam's construction downstream. |
| Massachusetts | New York | Vermont | 42°44′45″N 73°15′54″W﻿ / ﻿42.74583°N 73.26500°W﻿ / 42.74583; -73.26500 | Marked with a stone. |
| Minnesota | North Dakota | South Dakota | 45°56′7″N 96°33′49″W﻿ / ﻿45.93528°N 96.56361°W﻿ / 45.93528; -96.56361 | Near the Bois de Sioux River |
| Montana | North Dakota | South Dakota | 45°56′43″N 104°2′44″W﻿ / ﻿45.94528°N 104.04556°W﻿ / 45.94528; -104.04556 | Marked with a red granite stone. |
| Montana | South Dakota | Wyoming | 44°59′51″N 104°3′28″W﻿ / ﻿44.99750°N 104.05778°W﻿ / 44.99750; -104.05778 | Marked with a stone within a fence. |
| Nebraska | South Dakota | Wyoming | 43°0′2″N 104°3′11″W﻿ / ﻿43.00056°N 104.05306°W﻿ / 43.00056; -104.05306 | Marked with a stone within a fence. |
| New Jersey | New York | Pennsylvania | 41°21′27″N 74°41′42″W﻿ / ﻿41.35750°N 74.69500°W﻿ / 41.35750; -74.69500 | Marked by the Tri-States Monument in Port Jervis, New York, at the confluence of the Delaware and Neversink rivers. |
| New Mexico | Oklahoma | Texas | 36°30′1″N 103°0′9″W﻿ / ﻿36.50028°N 103.00250°W﻿ / 36.50028; -103.00250 | Texhomex Marker |
| North Carolina | Tennessee | Virginia | 36°35′17″N 81°40′39″W﻿ / ﻿36.58806°N 81.67750°W﻿ / 36.58806; -81.67750 | North Carolina–Tennessee–Virginia Corners - Marked. |

## Water

| State 1 | State 2 | State 3 | Coordinates | Water | Notes |
| Alabama | Mississippi | Tennessee | 34°59′44″N 88°12′0″W﻿ / ﻿34.99556°N 88.20000°W﻿ / 34.99556; -88.20000 | Tennessee River | |
| Arizona | California | Nevada | 35°0′7″N 114°38′1″W﻿ / ﻿35.00194°N 114.63361°W﻿ / 35.00194; -114.63361 | Colorado River | |
| Arkansas | Mississippi | Tennessee | 34°59′44″N 90°18′33″W﻿ / ﻿34.99556°N 90.30917°W﻿ / 34.99556; -90.30917 | Mississippi River | Memphis, Tennessee metro area. |
| Arkansas | Missouri | Tennessee | 36°0′2″N 89°43′59″W﻿ / ﻿36.00056°N 89.73306°W﻿ / 36.00056; -89.73306 | Mississippi River | |
| Connecticut | New York | Rhode Island | 41°18′16″N 71°54′26″W﻿ / ﻿41.30444°N 71.90722°W﻿ / 41.30444; -71.90722 | 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 | 39°48′7″N 75°24′54″W﻿ / ﻿39.80194°N 75.41500°W﻿ / 39.80194; -75.41500 | Delaware River | Philadelphia metro area, at the east end of the Twelve-Mile Circle. |
| Georgia | North Carolina | South Carolina | 35°0′2″N 83°6′31″W﻿ / ﻿35.00056°N 83.10861°W﻿ / 35.00056; -83.10861 | Chatooga River | Located in river very near marker on dry land. |
| Idaho | Oregon | Washington | 45°59′43″N 116°54′58″W﻿ / ﻿45.99528°N 116.91611°W﻿ / 45.99528; -116.91611 | Snake River | |
| Illinois | Indiana | Kentucky | 37°47′57″N 88°1′41″W﻿ / ﻿37.79917°N 88.02806°W﻿ / 37.79917; -88.02806 | Wabash River and Ohio River | Evansville, Indiana metro area. See Illinois–Indiana–Kentucky tri-state area. |
| Illinois | Indiana | Michigan | 41°45′39″N 87°12′28″W﻿ / ﻿41.76083°N 87.20778°W﻿ / 41.76083; -87.20778 | Lake Michigan | Known as either the Indiana Dunes or the Michigan Dunes Area |
| Illinois | Iowa | Wisconsin | 42°30′30″N 90°38′27″W﻿ / ﻿42.50833°N 90.64083°W﻿ / 42.50833; -90.64083 | Mississippi River | Dubuque, Iowa metro area. |
| Illinois | Kentucky | Missouri | 36°58′51″N 89°8′3″W﻿ / ﻿36.98083°N 89.13417°W﻿ / 36.98083; -89.13417 | Mississippi River and Ohio River | Little Egypt region popularly labeled as a tri-state area with St. Louis, Missouri, Carbondale, Illinois metro area and Paducah, Kentucky being its nuclei. |
| Illinois | Michigan | Wisconsin | 42°29′37″N 87°1′12″W﻿ / ﻿42.49361°N 87.02000°W﻿ / 42.49361; -87.02000 | Lake Michigan | |
| Indiana | Kentucky | Ohio | 39°6′20″N 84°49′13″W﻿ / ﻿39.10556°N 84.82028°W﻿ / 39.10556; -84.82028 | Ohio River | Cincinnati metro area. The tripoint is near, but not precisely at, the confluence with the Great Miami River. |
| Iowa | Illinois | Missouri | 40°22′42″N 91°25′10″W﻿ / ﻿40.37833°N 91.41944°W﻿ / 40.37833; -91.41944 | Mississippi River and Des Moines River | Border with Lee County, Iowa |
| Iowa | Minnesota | Wisconsin | 43°30′2″N 91°13′4″W﻿ / ﻿43.50056°N 91.21778°W﻿ / 43.50056; -91.21778 | Mississippi River | La Crosse, Wisconsin metro area. Was apparently marked at one time with a sign that had been anchored in the location, but that sign has since been moved as of 2001. |
| Iowa | Missouri | Nebraska | 40°35′7″N 95°45′56″W﻿ / ﻿40.58528°N 95.76556°W﻿ / 40.58528; -95.76556 | Missouri River | |
| Iowa | Nebraska | South Dakota | 42°29′26″N 96°26′44″W﻿ / ﻿42.49056°N 96.44556°W﻿ / 42.49056; -96.44556 | Big Sioux River and Missouri River | Sioux City, Iowa metro area. |
| Kansas | Missouri | Nebraska | 40°0′0″N 95°18′30″W﻿ / ﻿40.00000°N 95.30833°W﻿ / 40.00000; -95.30833 | Missouri River | |
| Kentucky | Missouri | Tennessee | 36°29′54″N 89°32′22″W﻿ / ﻿36.49833°N 89.53944°W﻿ / 36.49833; -89.53944 36°29′52″N 89°29′6″W﻿ / ﻿36.49778°N 89.48500°W﻿ / 36.49778; -89.48500 36°29′57″N 89°25′6″W﻿ / ﻿36.49917°N 89.41833°W﻿ / 36.49917; -89.41833 | Mississippi River | Three separate tripoints, due to meanders of the river (though probably only a single tri-state area surrounding them all). See also Kentucky Bend. |
| Kentucky | Ohio | West Virginia | 38°25′18″N 82°35′45″W﻿ / ﻿38.42167°N 82.59583°W﻿ / 38.42167; -82.59583 | Big Sandy River and Ohio River | Huntington (W.V.)-Ashland (Ky.)-Ironton (Oh.) Tri-State region. |
| Maryland | Virginia | West Virginia | 39°19′17″N 77°43′8″W﻿ / ﻿39.32139°N 77.71889°W﻿ / 39.32139; -77.71889 | Potomac River | Unmarked, at high water mark, because the Maryland West Virginia state line is at the high water mark even tho the Maryland Virginia state line runs generally along the low water line, so perhaps misclassified here because it is rarely actually under water. |
| Michigan | Minnesota | Wisconsin | 47°17′28″N 89°57′26″W﻿ / ﻿47.29111°N 89.95722°W﻿ / 47.29111; -89.95722 | Lake Superior | |
| Ohio | Pennsylvania | West Virginia | 40°38′20″N 80°31′8″W﻿ / ﻿40.63889°N 80.51889°W﻿ / 40.63889; -80.51889 | Ohio River | Technically the Beginning Point of the U.S. Public Land Survey, although the actual monument is 1,112 feet north of the tripoint due to the tripoint's current location under water; Pittsburgh Tri-State. |