Attu Island

Attu

Native name: Atan
Attu Island
Geography
Coordinates	52°54′09″N 172°54′34″E / 52.90250°N 172.90944°E / 52.90250; 172.90944Coordinates: 52°54′09″N 172°54′34″E / 52.90250°N 172.90944°E / 52.90250; 172.90944
Archipelago	Near Islands group of the Aleutian Islands
Area	344.7 sq mi (893 km2)
Length	35 mi (56 km)
Width	20 mi (30 km)
Highest elevation	2,946 ft (897.9 m)
Highest point	Attu Mountain
Administration
United States
State	Alaska
Census Area	Aleutians West Census Area
Demographics
Population	0 (2010)

Attu Battlefield and U.S. Army and Navy Airfields on Attu
U.S. National Register of Historic Places
U.S. National Historic Landmark
Built	1942
NRHP Reference #	85002729
Significant dates
Added to NRHP	February 4, 1985
Designated NHL	February 4, 1985

Attu (Aleut: Atan) is the westernmost and largest island in the Near Islands group of the Aleutian Islands of Alaska, and the westernmost point of land relative to Alaska, the United States, North America and the Americas. The island became uninhabited in 2010.

The island was the site of the only World War II land battle fought on an incorporated territory of the United States (the Battle of Attu), and its battlefield area is a U.S. National Historic Landmark.

Attu Station, a former Coast Guard LORAN station, is located at 52°51′N 173°11′E / 52.850°N 173.183°E / 52.850; 173.183, making it one of the westernmost points of the United States relative to the rest of the country. However, since it is in the Eastern Hemisphere, being on the opposite side of the 180° longitude line as the contiguous 48 states, it can also be considered one of the easternmost points of the country (a second Aleutian Island, Semisopochnoi Island at 179°46′E, is the easternmost location in the United States by this definition).