Extremes Points In The United States
Dungenese Wildlife Refuge, Washington
July 24, 2021
List of extreme points of the United States
There are a number of different interpretations for "easternmost" and "westernmost"; see below for full treatment.
This is a list of points in the United States that are farther north, south, east, or west than any other location in the country. Also included are extreme points in elevation, extreme distances, and other points of peculiar geographic interest.
Extreme points in the 50 states: Point Barrow, Ka Lae, Sail Rock, Peaked Island
Extreme points in the contiguous 48 states: Northwest Angle, Ballast Key, Sail Rock, Bodelteh Islands
Extreme points of the U.S. on the North American continent: Point Barrow, Cape Sable, West Quoddy Head, Cape Prince of Wales
Extreme points in all U.S. territory: Point Barrow, Rose Atoll, Wake Island, Peaked Island (red dots); Point Udall, Guam, and Point Udall, USVI are shown as green dots. The International Date Line is shown in yellow.
Point Barrow, Alaska 71°23′20″N156°28′45″W – northernmost point in the United States
Northwest Angle Inlet in Lake of the Woods, Minnesota 49°23′04.1″N95°9′12.2″W – northernmost point in the 48 contiguous states
Olympia, Washington 47°2′16″N122°54′3″W – northernmost capital city in the 48 contiguous states
Alaska has the northernmost geographic center of all the states. North Dakotahas the northernmost geographic center of the 48 contiguous states.
Rose Atoll, American Samoa 14°34′11″S168°9′10″W – southernmost point in the United States 
Futiga, American Samoa 14.372987°S 170.759741°W – southernmost town in the United States
Pago Pago, American Samoa14.273821°S 170.701265°W – southernmost capital city in the United States
Palmyra Atoll, U.S. Minor Outlying Islands 5°53′2″N 162°4′42″W – southernmost point in all U.S. incorporated territory
Ka Lae, Hawaii 18°54′39″N155°40′52″W – southernmost point in the 50 states
Discovery Harbour, Hawaii 19°02′3″N155°37′49″W - southernmost settlement in the 50 states
Nā'ālehu, Hawaii 19°3′57″N155°35′15″W – southernmost town in the 50 states
Western Dry Rocks, Florida Keys, Florida24°26.8′N 81°55.6′W – southernmost point in the 48 contiguous states occasionally above water at low tide
Cape Sable, Florida 25°7′6″N81°5′11″W – southernmost point on the U.S. mainland
Florida City, Florida 25°26′54″N80°28′57″W – southernmost municipality in the contiguous U.S.
Cameron County, Texas 25°50′14.5″N97°23′39.9″W – southernmost point on the Mexico–United States border.
Hawaii has the southernmost geographic center of all the states. Florida has the southernmost geographic center of the 48 contiguous states.
Point Udall, St. Croix, U.S. Virgin Islands17°45′19″N 64°33′54″W – easternmost point in the United States, by direction of travel
Christiansted, U.S. Virgin Islands17.7482°N 64.7168°W – easternmost town in the United States, by direction of travel
Charlotte Amalie, U.S. Virgin Islands18.340688°N 64.931065°W – easternmost capital city in the United States, by direction of travel
West Quoddy Head, Maine44°48′55.4″N 66°56′59.2″W – easternmost point on the U.S. mainland
Augusta, Maine 44.307°N 69.782°W – easternmost U.S. state capital
New York City, New York 40.6635°N 73.9387°W – easternmost city of more than 1,000,000 residents in the United States
Pochnoi Point, Semisopochnoi Island, Alaska 51°57′42″N 179°46′23″E – easternmost point in all U.S. territory by longitude
Northern Islands Municipality, Northern Mariana Islands 16.0271°N 146.0645°E – easternmost municipality in all U.S. territory, by longitude
Saipan, Northern Mariana Islands15°11′N 145°45′E – easternmost capital city in the United States, by longitude
Maine has the easternmost geographic center of the 50 states.
Point Udall, Santa Rita, Guam(13°26′51″N 144°37′5.5″E) – westernmost point and westernmost town in the United States, by direction of travel
Peaked Island, offshore from Cape Wrangell, Attu Island, Alaska 52°55′14″N172°26′16″E – westernmost point in the 50 states by direction of travel, and last sunset (at equinox) in all U.S. territories. West of it passes the International Date Line, after which come Russian territorial islands.
Amatignak Island, Alaska 51°16′7″N179°8′55″W – westernmost point in all U.S. territories by longitude
Pago Pago, American Samoa 14°16′46″S170°42′2″W – westernmost capital city in the United States, by longitude
Honolulu, Hawaii 21°18′25″N157°51′30″W – westernmost U.S. state capital
Umatilla Reef, offshore from Cape Alava, Washington 48°11.1′N 124°47.1′W – westernmost point in the 48 contiguous states occasionally above water at low tide
Bodelteh Islands, offshore from Cape Alava, Washington 48°10′42.7″N124°46′18.1″W – westernmost point in the 48 contiguous states continuously above water
Cape Alava, Washington 48°9′51″N124°43′59″W – westernmost point on the U.S. mainland (contiguous)
Neah Bay, Washington 48°21′56″N124°36′56″W – westernmost town in the 48 contiguous states
Hawaii has the westernmost geographic center of all the states. Oregon has the westernmost geographic center of the 48 contiguous states.
Interpretation of easternmost and westernmost
There are three methods for reckoning the eastern and western extremes of the United States.
One method is to use the Prime Meridian as the dividing line between east and west. This meridian running through Greenwich, London, is defined as zero degrees longitude and could be called the least eastern and least western place in the world. The 180th meridian, on the opposite side of the globe, is therefore the easternmost and westernmost place in the world.
Another method is to use the International Date Line as the easternmost–westernmost extreme. On the equinox, the easternmost place would be where the day first begins, and the westernmost is where the day last ends. Still another method is to first determine the geographic center of the country and from there measure the shortest distance to every other point. All U.S. territory is spread across less than 180° of longitude, so from any spot in the U.S. it is more direct to reach the easternmost point, Point Udall, U.S. Virgin Islands, by traveling east than by traveling west. Likewise, there is not a single point in U.S. territory from which heading east is a shorter route to the westernmost point, Point Udall, Guam, than heading west would be, even accounting for circumpolar routes. The two different Point Udalls are named for two different men: Mo Udall (Guam) and Stewart Udall (Virgin Islands), brothers from the Udall family of Arizona who both served as U.S. Congressmen.
Denali, Alaska 63°4′9″N 151°0′23″W – highest summit in the United States, all US territories, and North America at 20,310 feet (6,190.5 m)
Mauna Kea, Hawaiʻi 19°49′14″N155°28′5″W – highest island summit in all U.S. territory and the entire Pacific Ocean at 13,796 feet (4,205 m)
Lake County Airport, Colorado39°13′13″N 106°19′00″W – highest airfield in all U.S. territory and North America at 9,927 feet (3,026 m)
Mount Mitchell, North Carolina35°45′53″N 82°15′54″W – highest point in eastern United States at 6,684 feet (2,037 m)
Mount Washington, New Hampshire44°16′13″N 71°18′12″W – highest point in northeastern United States at 6,288 feet (1,917 m)
Beech Mountain, North Carolina36°12′23″N 81°52′59″W – highest incorporated community east of the Mississippi River at an elevation of 5,506 feet (1,678 m).
Badwater Basin, Death Valley, California, 36°14′23″N 116°50′5″W – lowest surface point in all U.S. territory and North America, at −279 feet (−85 m)
Salton Sea, California, 33°19′59″N115°50′3″W – lowest lake in all U.S. territory and North America, at −226 feet (−69 m)
Furnace Creek Airport, California36°27′50″N 116°52′53″W – lowest airfield in all U.S. territory and Western Hemisphere, at −210 feet (−64 m)
9th Ward of New Orleans, Louisiana, 30°02′40″N 89°56′47″W – lowest surface point in eastern United States, at −7 feet (−2.1 m)
Lake Superior bottom, Michigan, 46°54′31″N 86°35′52″W – lowest freshwater point in all U.S. territory, at −732 feet (−223 m)[note 3]
Puget Sound bottom, Washington, 47°44.9′N 122°25.7′W – lowest seawater point in the interior of the United States, at −956 feet (−291 m)[note 4]
Most remote point in the 50 states: Ipnavik River, National Petroleum Reserve–Alaska, 68°45′N 156°41′W; 120 miles (190 km) from nearest habitation.
Geographic center of the 50 states: approximately 20 miles (32 km) north of Belle Fourche, South Dakota, 44°58′N103°46′W
Geographic center of the 48 contiguous states: approximately 4 miles (6.4 km) west of Lebanon, Kansas, 39°50′N98°35′W
The North American pole of inaccessibility (distant from ocean access) is at 43°22′N 101°58′W, about 11 miles (18 km) southeast of the town of Kyle, on the Pine Ridge Indian Reservation, in Bennett County, South Dakota, 1,025 miles (1,650 km) from the nearest coastline.
The southwesternmost point of the contiguous United States is Border Field State Park, California.
The northwesternmost point of the contiguous United States is Cape Flattery, Washington.
Island of Hawaiʻi, Hawaiʻi 19°49′15″N155°28′5″W – most extensive island in all U.S. territory at 4,028 square miles (10,430 km2) and tallest island in all U.S. territory and the entire Pacific Ocean at 13,796 feet (4,205 m).
Prince of Wales Island, Alaska55°37′55″N 132°54′27″W – most extensive island of the Alexander Archipelago at 2,577 square miles (6,670 km2).
Long Island, New York 40°52′10″N73°00′00″W – most extensive island of the U.S. Atlantic coast at 1,401 square miles (3,630 km2).
Isle Royale in Lake Superior, Michigan48°0′N 88°55′W – most extensive island in a lake in all U.S. territory at 206.73 square miles (535.4 km2).
The most remote islands in the United States are within the U.S. Minor Outlying Islands (namely, islands such as Palmyra Atoll and Johnston Atoll.)
Lake Superior 47°42′N 87°30′W – Lying along the Canada–United States border, it is the second largest freshwater lake in the world by surface area, at 31,700 sq mi (82,100 km2), of which 20,600 square miles (53,350 km2) is within the United States. It is also North America's largest lake by volume, at 2,900 cu mi (12,000 km3); it is commonly called the largest lake by surface area when Lake Michigan and Lake Huron are not considered one lake.
Crater Lake, Oregon, 42°57′N122°5′W – deepest lake, at 1,943 feet (592 m).
Greatest east–west distance in the 48 contiguous states: 2,800 miles (4,500 km)
Greatest north–south distance in the 48 contiguous states: 1,650 miles (2,660 km).
Greatest distance between any two points in U.S. territory: 9,514 miles (15,311 km), from Point Udall, Guam, to Point Udall, St. Croix, U.S. Virgin Islands(formerly known as Orote Point and East Point, respectively).
Greatest distance between any two points in the 50 states: 5,859 miles (9,429 km), from Kure Atoll, Hawaii, to Log Point, Elliott Key, Florida.
Greatest distance between any two points in the contiguous 48 states: 2,901 miles (4,669 km), from North Farallon Island, California, to Sail Rock, east of West Quoddy Head, Maine.
Greatest driving distance between any US territory in contiguous lower 48 states (via US highway system): 3,689 miles (5,937 km), from Fort Zachary Taylor, Key West, Florida, to Cape Flattery, Washington.
Greatest distance between any two mainland points in the contiguous 48 states (linear distance): 2,892 miles (4,654 km), from Point Arena, California, to West Quoddy Head, Maine.
Greatest east–west distance in U.S. territory 5,823 miles (9,371 km), from Kure Atoll, Hawaii, to Riviera Beach, Florida.
Some map projections make diagonal lines appear longer than they actually are. The diagonal line from Kure Atoll, Hawaii, to West Quoddy Head, Maine, is 5,797 miles (9,329 km); and the diagonal from Cape Wrangell, Attu Island, Alaska, to Log Point, on Elliott Key, Florida, is 5,505 miles (8,859 km).