This is a list of islands of the United States, as ordered by area. It includes most islands with an area greater than 20 square miles (approximately 52 km2). Mainland areas cut by human-made canals are not considered islands.
This section of the list is not complete, although it should cover most of the islands in the United States over 20 square miles (52 km2).
Padre Island comprises a total of 133,918 acres (541.95 km2) in Nueces, Kleberg, Willacy, Cameron, and Kenedy County, Texas.
Isle Royale National Park preserves 132,018 acres (534.26 km2) of land-based wilderness