Unalaska is a city in the Aleutians West Census Area

Aleutians West Census Area, Alaska

Aleutians West Census Area is a census area located in the U.S. state of Alaska. It contains most of the Aleutian Islands, from Attu Island in the west to Unalaska Island in the east, as well as the Pribilof Islands, which lie north of the Aleutians in the Bering Sea. As of 2010, the population is...

 of the Unorganized Borough of the U.S. state

U.S. state

A U.S. state is any one of the 50 federated states of the United States of America that share sovereignty with the federal government. Because of this shared sovereignty, an American is a citizen both of the federal entity and of his or her state of domicile. Four states use the official title of...

 of 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...

. Unalaska is located on Unalaska Island

Unalaska Island

Unalaska is an island in the Fox Islands group of the Aleutian Islands in the U.S. state of Alaska, at . The island has a land area of . The city of Unalaska, Alaska, covers part of the island and all of neighboring Amaknak Island where the Port of Dutch Harbor is located...

 and neighboring Amaknak Island

Amaknak Island

Amaknak Island or Umaknak Island is an islet in Unalaska Bay, northeast of Unalaska Island in the Fox Islands group of the Aleutian Islands in southwest Alaska. The Dutch Harbor area of Unalaska, Alaska is on Amaknak Island...

 in the Aleutian Islands off of mainland Alaska.

The population was 4,283 at the 2000 census; it is estimated to have shrunk to 3,836 by 2007. Almost all of the community's port facilities are on Amaknak Island, better known as Dutch Harbor or just "Dutch".