All citizens of the United States are a resident of some state for tax purposes. Your resident state is determined by various factors including:
If you don't know which state you should declare as your resident state, CLICK HERE to access the contact information for the states in question. Contact each state to determine the guidelines for being considered a resident.
Note. You may not have been a resident of only one state for the year. It is possible to be a full-year resident of one state and a nonresident of other state(s), or a part-year resident in multiple states and nonresident in other states at the same time.