Admiralty Island is an island in the Alexander Archipelago in Southeast Alaska. It is 145 km (90 mi) long and 56 km (35 mi) wide with an area of 4,264.1 km (1,646.4 sq mi), making it the seventh-largest island in the United States and the 132nd largest island in the world. It is one of the ABC islands in Alaska. The island is nearly cut in two by the Seymour Canal; to its east is the long, narrow Glass Peninsula. It's separated from Kupreanof Island in the south by Frederick Sound. Most of Admiralty Island—955,747 acres (3,868 km)—is protected as the Admiralty Island National Monument administered by the Tongass National Forest. The Kootznoowoo Wilderness encompasses vast stands of old-growth temperate rainforest. These forests provide some of the best habitat available to species such as brown bears, bald eagles, and Sitka black-tailed deer.
Angoon, a traditional Tlingit community home to 572 people, is the only settlement on the island, although an unpopulated section of the city of Juneau comprises 264.68 km (102.19 sq mi) (6.2 percent) of the island's land area near its northern end. The island's total population at the 2000 census was 650.
