Alaska and Hawaii are not considered to be part of the "continental" United States, because these states are separated from the "lower 48" states. Alaska is separated by Canada, and Hawaii is about 2000 miles out in the Pacific Ocean.
Currently there are only two states that do not permit gambling. Utah & Hawaii. Some states do not have any land based casinos within their state lines such as; Virginia, Vermont, Tennessee, Alaska, Washington DC & Kentucky. However, within these states players are able to gamble online at age 18.