Alaska.
Alaska is the easternmost state in the US. The Aleutian Islands are part of Alaska. Attu is the westernmost island in the Aleutian Islands of Alaska. The 180th meridian (the International Date Line) crosses the Aleutian Islands. Attu is on the opposite side of the 180° longitude line and is in the Eastern Hemisphere. Therefore, Attu is the easternmost area in the U.S. Juneau is the capital city in the U.S. state of Alaska.
The Aleutian IslandsThe Aleutian Islands.
Alaska is the easternmost state in the US. The Aleutian Islands are part of Alaska. Attu is the westernmost island in the Aleutian Islands of Alaska. The 180th meridian (the International Date Line) crosses the Aleutian Islands. Attu is on the opposite side of the 180° longitude line and is in the Eastern Hemisphere. Therefore Attu is the easternmost area in the U.S.
Aleutian Islands
Alaska is both the northernmost and the easternmost state in the US. The Aleutian Islands are part of Alaska. Attu is the westernmost island in the Aleutian Islands of Alaska. The 180th meridian (the International Date Line) crosses the Aleutian Islands. Attu is on the opposite side of the 180° longitude line and is in the Eastern Hemisphere. Therefore Attu is the easternmost area in the U.S.
California has the 2nd most, Alaska has the most (many are in the Aleutian Islands).
The Aleutian and Hawaiian Islands.
Alaska is the easternmost state in the US. The Aleutian Islands are part of Alaska. Attu is the westernmost island in the Aleutian Islands of Alaska. The 180th meridian (the International Date Line) crosses the Aleutian Islands. Attu is on the opposite side of the 180° longitude line and is in the Eastern Hemisphere. Therefore Attu is the easternmost area in the U.S.
Alaska is the westernmost state. The Aleutian Islands extend past 180˚W/E, which makes Alaska not only the westernmost state, but the easternmost as well, as these islands extend into the Eastern Hemisphere. See the related link below for more information about the Aleutian Islands.
Alaska is the westernmost U.S. state. Most of Alaska is in the Western Hemisphere. Hawaii is in the Eastern Hemisphere. The Aleutian Islands are part of Alaska. The 180th meridian (the International Date Line) crosses the Aleutian Islands making Alaska the westernmost U.S. state in the Western Hemisphere. Part of Alaska's Aleutian Islands are on the other side of the 180th meridian (the International Date Line). Therefore that part of Alaska is in the Eastern Hemisphere and makes Alaska also the easternmost U.S. state.
Because of the Aleutian Islands, the International Dateline and the quirks of geography, Alaska is the easternmost, westernmost and northernmost of the 50 US States.