Alaska is part of the United States of America, 1959
Alaska does not have a personal income tax so is not listed as one of the states for completing a state tax return.
<a rel="nofollow" target="_blank" href="http://tax.alaska.gov/programs/programs/index.aspx?10001">http://tax.alaska.gov/programs/programs/index.aspx?10001</a>(comment edited)
Alaska, Florida, Nevada, South Dakota, Texas, Washington, and Wyoming don't have income tax