Fire Island is a 5.5mi long island in the U.S. state of Alaska, located near the head of Cook Inlet at . It is the only island in the Municipality of Anchorage, sitting three miles off the city's Point Campbell, and nine miles from downtown. Its land area is 17.467 km2 (6.7439 sq mi, or 4,316.1 acres), and there was no permanent resident population at the 2000 census.