Unga Island is the largest of the Shumagin Islands

Shumagin Islands

The Shumagin Islands are a group of 20 islands in the Aleutians East Borough south of the mainland of Alaska, USA, at54°54'–55°20' North 159°15'–160°45' West. The largest islands are Unga Island, Popof Island, Korovin Island, and Nagai Island. Other islands include Andronica, Big Koniuji, Little...

 off the Alaska Peninsula

Alaska Peninsula

The Alaska Peninsula is a peninsula extending about to the southwest from the mainland of Alaska and ending in the Aleutian Islands. The peninsula separates the Pacific Ocean from Bristol Bay, an arm of the Bering Sea....

 in southwestern Alaska

Alaska

Alaska is the largest state in the United States by area. It is situated in the northwest extremity of the North American continent, with Canada to the east, the Arctic Ocean to the north, and the Pacific Ocean to the west and south, with Russia further west across the Bering Strait...

, USA. The island has a land area of 170.73 sq mi (442.188 km²), making it the 35th largest island in the United States. As of the 2000 census

United States Census, 2000

The Twenty-second United States Census, known as Census 2000 and conducted by the Census Bureau, determined the resident population of the United States on April 1, 2000, to be 281,421,906, an increase of 13.2% over the 248,709,873 persons enumerated during the 1990 Census...

, it had a permanent population of one, however the island is now uninhabited.

Unga Island was formerly named Grekodelierovskoe (Greek Delarov) for Evstratii Ivanovich Delarov who explored the area in the late 18th century on behalf of the Russian-American Company.