What is the telephone area code for Alaska?

The entire state of Alaska is in area code +1 907

... except for the tiny town of Hyder, Alaska, which receives its telephone service from the adjacent town of Stewart, B.C., Canada, and therefore uses area code +1 250. Note that calls to Hyder, Alaska, will be billed as calls to Canada, whether you are calling from the USA, Canada, or elsewhere in the world.