Chichagof Island, or Shee Kaax, is an island in the Alexander Archipelago of the Alaska Panhandle. At 75 miles long and 50 miles wide, it has a land area of 2,048.61 square miles, making it the fifth largest island in the United States and the 109th largest island in the world. Its coastline measures 742 miles. There was a 2000 census population of 1,342 p…Chichagof Island, or Shee Kaax, is an island in the Alexander Archipelago of the Alaska Panhandle. At 75 miles long and 50 miles wide, it has a land area of 2,048.61 square miles, making it the fifth largest island in the United States and the 109th largest island in the world. Its coastline measures 742 miles. There was a 2000 census population of 1,342 persons. It is one of the ABC islands of Alaska. Chichagof Island has the highest population of bears per square mile of any place on Earth.