List of extreme points of the United States

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.

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.

Still another method is to first determine the geographic center of the country and from there measure the shortest distance to every other point.

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.