The island is approximately 18 mi (30 km) in length. The land area is 129.01 sq mi (334.13 km²). Mount Akutan volcano is located on it, which had a major lava eruption in 1979.
Akutan is an Aleut name reported by Capt. Pyotr Krenitsyn and Mikhail Levashev in 1768, and spelled Acootan by James Cook in 1785. This name may be from the Aleut word "hakuta" which, according to R. H. Geoghegan, means "I made a mistake."
- Akutan Island: Blocks 1052 and 1053, Census Tract 1, Aleutians East Borough, Alaska United States Census Bureau