Yes, Alaska is considered an exclave of the United States. An exclave is a portion of territory that is geographically separated from the main part of the country it belongs to and is surrounded by foreign territory.
In Alaska’s case, it is located in the far northwest corner of North America, separated from the contiguous United States by Canada. While it is part of the United States, the fact that it does not share a land border with any other U.S. state makes it an exclave in a geographical sense.
It’s important to note that the term exclave can also refer to any territory that is detached from its main section, regardless of how it interacts politically or administratively. Alaska fits this description due to its separation from the other 48 states.