We are often asked the question "What are the most northern, southern, eastern and western U.S. States?" Well, if you include all 50 states in the answer, and you should, the answers are:
If you note the map, Alaska is clearly the most northern state, and Hawaii, at 20º North, is without doubt the most southern state. (Note how much further south it is than Florida)
As far as the most western state, note how Alaska's Aleutian Islands stretch right up to the edge of the Western Hemisphere at the 180º line of Longitude, thus the most western state in the country.
Alaska is also the answer for eastern, as the Aleutian Islands stretch across the 180º line of Longitude, into the Eastern Hemisphere, and up the edge of the Russian Federation.
If you exclude Alaska and Hawaii, the answers are: