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Extreme points of the United States: Map

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This is a list of the extreme points of the United Statesmarker, the points that are farther north, south, east, or west than any other location in the country. Also included are extreme points in elevation.

There are a number of different interpretations for "easternmost" and "westernmost"; see below for full treatment.


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 of U.S. territory: Point Barrow, Rose Atoll, Wake Island, Peaked Island (red); Point Udall, Udall Point (green).
The International Date Line is shown in yellow.


Northernmost



Note that maps of the 48 states that are displayed in an equal-area projection (i.e. curved lines of latitude) can give the impression that the state of Maine extends further north than it actually does. The northernmost point in Mainemarker is at approximately 47.46 degrees North latitude. This line of latitude passes through the southern suburbs of Seattle. From there, it is approximately north to the 49th parallel. So there is a wide swath of land within the 48 states (encompassing portions of Washington, Idahomarker, Montanamarker, North Dakotamarker, and Minnesota) that is further north than anyplace in Maine. Included in this area are such places as Spokane, Washingtonmarker, Coeur d'Alene, Idahomarker, Great Falls, Montanamarker, Minotmarker and Grand Forks, North Dakotamarker, and Bemidji, Minnesotamarker. Even Isle Royalemarker and parts of the Upper Peninsula of Michiganmarker (such as the Keweenaw Peninsula) are further north than anywhere in Maine.


Southernmost

Note that maps of the 48 states that are displayed in an equal-area projection can give the impression that the state of Texas extends farther south than it actually does. The southernmost point in Texas (just southeast of Brownsville) is at approximately 25.84 degrees North latitude. This line of latitude passes through Hialeah, Floridamarker, which is slightly north of Miami.


Easternmost

Note that maps of the 48 states that are displayed in an equal-area projection can give the impression that the state of Florida extends further east than it actually does. The easternmost point in Florida (Palm Beach Shores) is at approximately 80.03 degrees West longitude. This line of longitude passes through (or near) such places as Charleston, South Carolinamarker, High Point, North Carolinamarker, Salem, Virginiamarker, Morgantown, West Virginiamarker, and Pittsburghmarker and Erie, Pennsylvaniamarker – further west than all of New Yorkmarker, New Jerseymarker, and all of the New Englandmarker states.


Westernmost

  • Point Udall, Guammarker ( ) — westernmost point in all of U.S. territory, by direction of travel
  • Peaked Island, offshore from Cape Wrangellmarker, Attu Islandmarker, Alaskamarker (172°26'E) — westernmost point in the 50 states, by direction of travel, and last sunset (at equinox) in all of U.S. territory
  • Adak, Alaskamarker — westernmost town in the 50 states, by direction of travel and by longitude
  • Unalaska, Alaskamarker - westernmost city of more than 2500 residents in the 50 states, by direction of travel and by longitude
  • Amatignak Islandmarker, Alaskamarker (179°6'W) — westernmost point in all of US territory, by longitude
  • Cape Prince of Wales, Alaska (168°7'W) — westernmost point on the North American continent
  • Umatilla Reef, offshore from Cape Alavamarker, Washingtonmarker ( ) — westernmost point in the 48 contiguous states occasionally above water at low tide
  • Anchor Point, Alaskamarker ( ) — Westernmost point on the continuous road system of North America
  • Bodelteh Islands, offshore from Cape Alavamarker, Washingtonmarker (124°46'W) — westernmost point in the 48 contiguous states continuously above water
  • Cape Alavamarker, Washington ( ) — westernmost point on the U.S. mainland (contiguous)
  • Ozette, Washingtonmarker — westernmost town in the 48 contiguous states
  • Port Orford, Oregonmarker — westernmost city of more than 1000 residents in the 48 contiguous states
  • Brookings, Oregonmarker — westernmost city of more than 5000 residents in the 48 contiguous states
  • Eureka, Californiamarker — westernmost city of more than 25,000 residents in the 48 contiguous states
  • Corvallis, Oregonmarker — westernmost city of more than 50,000 residents in the 48 contiguous states
  • Eugene, Oregonmarker — westernmost city of more than 100,000 residents in the 48 contiguous states
  • Portland, Oregonmarker — westernmost city of more than 500,000 residents in the 48 contiguous states
Note that maps of the 48 states that are displayed in an equal-area projection can give the impression that the state of California extends further west than it actually does. The westernmost point in California (Cape Mendocino) is approximately seven miles east of the westernmost point in Oregon (Cape Blanco), and approximately east of the westernmost point in Washington (Cape Alava).


Extremes in elevation

  • Mount McKinleymarker, Alaskamarker (20,320 feet; 6,194 meters) — highest point in all of U.S. territory
  • Mount Whitneymarker, Californiamarker (14,505 feet; 4,421 meters) — highest point in the 48 contiguous states
  • Mount Evansmarker, Coloradomarker (14,120 feet, 4,304 meters) — highest road in the 48 contiguous states
  • Winter Park, Coloradomarker (12,060 feet; 3,676 meters) — highest city limits in all of U.S. territory (However, note that there are no permanent residents in Winter Park above the level of 10,000 ft.)
  • Alma, Coloradomarker (10,355 feet; 3,156 meters) — highest town with permanent residents above 10,000 ft. in all of U.S. territory
  • Leadville, Coloradomarker (10,152 feet; 3,094 meters) — highest city and airport runway in all of U.S. territory
  • Calipatria, Californiamarker (−184 feet; −56 meters) — lowest city in all of U.S. territory
  • Badwater Basinmarker (Death Valleymarker), Californiamarker (−282 feet; −86 meters) — lowest surface point in all of U.S. territory
  • Lake Superiormarker floor, Michiganmarker - (−733 feet; −223 meters) — lowest point below water in all of U.S. territory


Other



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, Londonmarker, is defined as 0 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 Linemarker 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 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 Orote Point, Guam, than heading west would be, even accounting for circumpolar routes.

See also



References

  1. The Milepost 61st edition pg. 626 ISBN 978-1892-15426-2


External links




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