It has a land area of 127.336 km2 (49.165 sq mi) and a resident population of 31 persons as of the 2000 census. The island is the site of the South Esther Island State Marine Park, a part of the Alaska State Parks system.
The island is 127.336 square kilometers (49.165 sq mi) in size and has a population of 31 people according to the 2000 census. It's important because it houses South Esther Island State Marine Park, which falls under Alaska's state parks system.